E2EE is nice, but he also wants “as relelevant advertisement as possible” which (AFAIK) cannot be done with a huge data collection.
https://twitter.com/elonmusk/status/1585619322239561728
Anyway I stopped using Twitter shortly after the Russian invasion and recently I deleted all my tweets, cleaned DMs, followers/following, changed email, name, info and generally “poisoned the well” a bit 
There are most likely backups and everything, but hopefully something will be deleted/changed.
Generally why digital minimalism, lowering the number of accounts, limiting genuine PII on your accounts is always a good move.
