It is only required for new users, but not about the ones already on the service.
This could be Twitter doing a swinging dick move to show they won’t tolerate it.
When Facebook and Instagram goes down, people turn to Twitter to complain about it.
To be honest, if you haven’t used it in a few years, you probably won’t miss it.
The latest stalking app took it to a new level. It’s bad when Facebook said they went too far.