it's inappropriate to hate the people who adopt it, because they're often in a position where they rely on that sort of belief for one reason or another.

However I think it is fairly appropriate to 'hate' the people who preach it. It has a sinister ideological component of advocating individualism above all else, mostly to justify lack of taking responsibility for the collective good, or categorically blaming individuals for their situation. It also has fuelled a gigantic self-help industrial complex that's fairly effective at parting desperate people from their money.