liberalism was mainly to blame for environmental devastation since it favors the individual and encourages endless pleasure seeking.
He's right. Liberalism encourages those who do not know better to rise above their station in life, putting them in control of things they do not understand. However, liberalism is not so much a political ideology as a social one. It is composed of wishful thinking and politeness, which requires we insist that nothing is anyone's fault. Bad things just happen and it's too bad. As a result, liberalism detaches us from any kind of cause/effect logic. This means that people do what they desire, even if it's illogical, and so we have an overpopulated planet with people living on debt, buying junk and throwing it out, eating too much, driving giant trucks, etc.
Some dude on the blog was complaining about how this site once opposed both liberalism and conservatism. It does, except paleoconservatism. Modern conservatism is liberalism with a giant fucking flag on it, and the idea that if you can afford 300 lbs of bacon and a giant truck, you should be able to enjoy them wherever you please, damn the consequences. Old-school conservatism did NOT see things this way. It didn't see itself as conservative, either -- it saw itself as common sense, and liberalism as a mental disorder of the young, the inexperienced, bored housewives, neurotic neckbeard computer programmers white knighting for their anime queen girlfriends, etc.