FWIW, I've done business with Meta and seen their internal culture, or at least a peek at the corner of it I interact with and at the other small corners where people I know ended up working.
I wouldn't work there if I could help it, but the issues I saw are very much in line with other tech companies I know, big and small.
Meta isn't special, they just were one of those at the right place at the right time and they grew to be bigger than all of the other ones. Like all other tech corpos I know, they are made up of a mix of well intentioned and misguided people mostly struggling to navigate a self-sabotaging, entirely too large to manage corporate culture.
Meta isn't the death star. None of these tech firms are. Capitalism doesn't need your activism to be capitalism.