pbjamm

That assumes that your deletions are actually deleted and not just unlinked. Even then they almost certainly still have all that data in the form of backups. There is a near 100% chance it has been sold and used to train LLMs.

And if they really want to they could restore the comments/posts with randomly generated user names.

Some of us are IT admins who have been in the game since the 1990 and have seen this happen before. The chances of a good outcome wrt Threads are vanishingly small. Not zero for sure, but damn close.