I haven’t had a fully collocated team in 15 years. The only purpose of RTO is tax breaks and stealth layoffs.
God forbid there might be actual people (including developers) who prefer to work in an office with others. Impossible!
It's hard to make a hybrid approach work, where some people are mostly in the office, and some people are always remote.
However the extra burden falls mostly on the remote people, so I see not much of a reason to disallow people from going remote.
RTO is clearly not about 'end-employee' preferences, having an office can be about that, but RTO is just come to the office regardless of your preference.