People need to stand firm against the needless RTOs and demands to be present in a workplace where your work consists largely of things you can do safely from the privacy of your own home.
Without more mass resignations when companies start to roll out RTOs like this; they will never learn. If you work at such a company; start looking for another job, even if you are willing to work in the office a few days a week. Punish them harshly for enforcing RTOs.