The problem is, they don't even let most people have actual offices at the office. Even if productivity is better this way, isn't there an advantage to being able to hire people from a wider geography, access to a larger talent pool? I read @paulg and other leadership type YC people support return to office as well. I recall startups competing for talent desperately. That was why silicon valley startups always had cr…
There's also the question of executives having a stake in the commercial real estate that's used for the office, but I think it's secondary, as they're too okay with firing people for that to be the main reason.