This is such a weird stance given the actual change that was made. No actual age verification, no external communication of any kind. All that got added is a number field. The ability to store a number labeled "age" for user accounts. That's it.
There already is a field for first name and last name. You can leave them blank as well (most probably do). If any software requires a number to be there, just enter 99 or whatever. Unless this gets severely worse this is such a nothing-burger.
I'm not happy about any step into that direction either, but pick your battles (or hill I guess). This certainly is a weird one.