Dear Avirah,
No I understood you. But I think we disagree about what megaeh panim applies to. I only apply it to where one is changing or misguiding the law. And not where one makes a mistake in his studies. I don’t apply it to someone who makes up his own ideology. Even if he is a rasha for doing so.
So…. Back to the topic… Why is bad hashkafa such a big deal?
Megaleh panim batorah shlo k’halacha?
Ki dvar Hashem bazah?
Lo sasuru?
These all seem out of place to me.
If the post is saying that this hashkafa nullifies a part of the Torah ch”v, then it falls into these categories. But the idea of modifying Torah to fit our hashkafos is the problem. Not the hashkafa itsef.
I would use this model even for ideas like hedonism.