I don’t have a strong opinion one way or the other. But I do have a fun story!
When my mom was pregnant with my older brother, they had a phone repair guy at the house. She was going through a book of baby names and trying to pick one, while her husband was yelling from the other room that his name would be the same as his (we’ll go with John for the example and privacy).
Husband: (yelling) his name will be John, same as me!
Mama: no! I will not do that! He’d be a junior, I’m not naming my son Junior like some redneck!
Husband: it’s not a redneck name! You don’t have to call him junior, call him john!
Mama: no, it’s trashy! It’s a white trash name and I’m not doing it! I want him to be able to read, not learn how to make moonshine out of an old radiator!*
*That one’s an actual direct quote
Phone repair guy: turns around I need something from the truck.
Mama looks up and notices his name tag. Junior.
Dude left, got in his truck, and drove away. Sent someone else out the next day to fix the phone
I am in no way techy, but from what I gather because the posts are federated they are also stored on the other instances as well, so posts are still visible. In the post announcing the shuttering of .ee they specifically mentioned adding a note on your profile to link to your new profile, so people can find your new profile after that shut down. That implies to me that everything not intentionally scrubbed remains open/visible long after the shut down of the original source.
Again, though, not techy, so I may be vocalizing from my posterior