I don't it's hostility per se. If a company closed down their office, then it's certain that they are now remote-only and the RTO aficionados will have no choice but to find a new employer that shares their preference.

But if only a subsection of employees work remotely in a "hybrid" or RTO setting, and the person in the office still has to sit in on Zoom calls all day then the whole point of being in the office is redundant. They're just working remotely from the office.