if you think about it, when people from the “Working class” demand things for the “Working class”, are they driven by a pure desire for equality or is it really about benefiting themselves as members of the “Working class”?

There’s a difference to “greed” and “self-interest”. It benefits me as a member of the working class if my class gets power. Personally, I have a moral reason behind class solidarity. But it’s not the only reason.

Then again, going totally in the opposite direction - i.e. no people should be shunned due to their Moral standpoint - also ends up with some weird results

Yeah, I didn’t say that you should never disagree with someone based on moral grounds. But if you’re debating with someone, then moral arguments can be very ineffective or you basically already agree with each other. The OP in the tweet chose to gloat about their moral superiority, which helps basically no one.

and whilst we should indeed listen to those who are on the right side of those red lines even if we don’t quite have the same Moral standpoint, those on the wrong side of those red lines are beyond salvation and not worth the effort

I think that the amount of people who are that far gone is way exaggerated. I’m sure that a lot of Trump voters are in the “leopards ate my face” cathegory and can therefore be convinced. But you don’t convince people by shaming them. The others (Nick Fuentes and the likes) don’t care about your moral judgement.