I assume that Twitter still has tons of managers and team leads that allowed this and have their own part of the responsibility. However, Musk is known to be a choleric with a mercurial temper, someone who makes grand public announcements and then pushes his companies to release stuff that isn’t nearly ready for production. Often it’s “do or get fired”.

So… an unshackled AI generating official posts, no human hired to curate the front page, headlines controlled through up-voting by trolls and foreign influence campaigns, all running unchecked in the name of “free speech” – that’s very much on brand for a Musk-run business, I’d say.