Perhaps the modern disillusion with religion and spirituality is an expression of the narcissist protecting his human rights to indulgence and isolation.
I see it the same way. I might not even call it a disillusion with religion but, to put it in stronger terms, an active resentment toward religion and spirituality. The crowd wants freedom FROM absolutely everything. And You-Know-Who is the biggest fascist of them all!
I would say it's a disillusion/resentment against authority as a rule. And against goodness, purity, as a rule. I've been seeing this in nearly all aspects of culture, some of which I have noticed myself falling into at times. To illustrate just how commonplace this is, consider heroes. The very concept of a hero is so removed from reality for popular culture that calling any living (and, increasingly, long-dead) human a hero is met with sneers and disbelief, numerous wailings about the proposed valiant's various failings. It seems Steve Jobs hardly died before blog posts started popping up naming all his known personal failings through all stages of his life.* This, I imagine, is equally a case of the equally-popular desire to be seen as counter-cultural - but I think this itself is really a symptom of the same anti-authority obsession.
So, the idea of a hero is now so hostile to our way of thinking that calling a real person a hero is seen as foolish and ignorant, so the only place we accept the concept of a hero is in the realm of fantasy. Movies, comic books, novels. A place where we can excuse our "simplistic" acceptance of the hero as a figure of might and justice by constantly reminding ourselves that it isn't real, and thus we can use said realm to let our ideals flourish in untainted form. But the thing is, even here, heroes are no longer pure. Consider the move in the last five(or so? a completely arbitrary guess on my part) years towards making all remotely dark movies into somber, angsty, spooky parodies of themselves. Consider the characters that inhabit these. I've never read any comic books, but I'm superficially familiar with some of the more modern characters; Sandman, Constantine, etc. They're all anti-heroes. They all seem to be plagued by very immoral natures. Batman became an internet meme under his re-imagination by the guy who made
300(the name escapes me), with his quote about being able to do something amazing because "I'm the GODDAMNED Batman!"
Contrast this trend with what superheroes used to be; representations of humanity's highest possible nature. Superman in particular shows this - and also seems to be one of the last hold-outs, even today, in that his constant re-inventions have yet to show the same degree of pollution as other re-invented heroic characters, such as Tony Stark(not just an alcoholic anymore, but also an incredibly egotistical womanizer and sociopathic manipulator who only performs heroic deeds because they're either fun or protect his financial investments) or Bruce Wayne(tortured childhood, constant battling against himself because he is only a few steps removed from the scum he combats). These characters were, when first conceived, paragons of virtue and honor. They served as examples of what we should all strive to be. And our culture is now so infected with lowliness, with such a disdain for purity, that when we now encounter these original concepts of said characters, they seem silly and infantile to us. Because they're not conflicted -in other words, because they know what they want to be, and completely, determinedly avoid distractions from that pursuit of perfection- they're childish. If they are not constantly struggling against themselves as well as their enemies, they are not close enough to reality for us and so become dismissed. In fact, the very idea of a hero so perfect, so pure in his power, that his defeat of villainy is natural and harmonious(i.e. effortless) seems ludicrous to us. But I say that this is what a hero should be. Not a man who is tormented by the fact he enjoys prostitutes during his off-time. Or, even worse, one who ISN'T tormented by such behavior!
Of course, this is all just in reference to comic book characters. Who cares, right? The unfortunate truth of the matter is that these are the closest things we have to the pagan gods of yore. Nordic more so than Greco-Roman, as the latter were quite immoral as well. Point being, we have become so detached from the idea of authority, virtue, and purity as GOOD things, that we have had to replace what used to be gods with something for which we can justify our admiration and enjoyment with the disclaimer "well, it's not real, but I know that; I just think it's cool." This, apart from making us all into hipsters, also encourages the idea that goodness itself is unreal. Additionally, it encourages man-boyism. Adults may -and, for most of humanity's existence, actively DID- take inspiration from the "unreal." But only children live within it fully. And so this all comes full-circle back to Linnaeus' original quote - indulgence and isolation
*Not that I'm saying Steve Jobs is a hero. He made toys for a living. The point is that he was, nevertheless, an influential person -for better or for worse- and the crowd hates it when power of any sort becomes concentrated in an individual, rather than spread equally among the crowd's members. They saw one who had risen above, and immediately began foaming at the mouth. He certainly didn't deserve all the praise he got, but that is irrelevant to my point.