for the average person, my opinion is that it's perfectly acceptable and even encouraged for them to invest in sustainable/ethical index funds. and I'm fine with them having some broad investments in the regular market

at the end of the day, we're not taking down the system overnight and people need secure futures. I would guess that the sum investments of the average joe don't get anywhere near those of the top 1% and of corporations, and so their effect is negligible.

still, I tried to avoid investing in companies I dislike, though I do have some broad market index funds