That's all the pros and cons. It doesn't fundamentally change the work experience itself because in any given conversation at least one other person will be having their remote day, forcing the interactions to take place in a remote-friendly way. You can sit at home or sit in the office, but you're still a remote worker. Many people, especially younger ones, won't take the deal. They have no family burden to escape and everywhere else to be. Therefore the return to office is all or nothing.
Any company doing hybrid right now really wants to be fully in office. And they'll boil the frog to get you there.
More interestingly, what will new companies do? Financial momentum is in favor of remote work. The burden of proof is on new companies to justify why they should reduce their runway by 25% and limit their hiring pool by investing in an office in some place. If there really is an advantage or an efficiency to in-person work that could otherwise be remote, we will find it shortly.