I am seeing evidence that deactivated Twitter handles are being reused within about a month of deactivation. If you're leaving Twitter, lock your account, delete your tweets and sign out of all devices, rather than deleting your account entirely.
Esther Crawford, who proudly slept in the Twitter office to meet some arbitrary deadline Elon made up, has apparently been fired. I hope that some day people will understand that killing yourself for your employer is pointless.