My question is why Y Combinator funded anything related to web3 and why it seems to defend these ideas when they are attacked on HN.
More money > money
Some VCs don't invest in things they think are net-negative even if there would be a big profit.
In other sectors be it healthcare, construction, anything involving people or the 'world of atoms' as Thiel liked to put it things aren't going that great. Web3 seems increasingly the only thing to throw billions at.
Sorry, since you mentioned I have to ask: Why volunteer at a VC? Shouldn't they have plenty of capital to pay you with?