I think You joined Facebook, and they showed you the "Employee side" where everything is beautiful, with free food and free toys and you became convinced. Yes, they treat employees super well, nobody contradicts that. But how does it change anything related to how bad the product is (and all the bad things it does to people that use it a lot).
It is easy to let the beautiful inner side of Facebook take over the product side of Facebook that everyone else is seeing from the outside.