Elon Musk fired thousands of Twitter employees shortly after he purchased the company and said their talents will "be of great use elsewhere."
There's just something fucking hilarious about laying off employees, mocking them, and being sued for improperly firing them -- and then whining that your competitor hired them and that they have access to Twitter information still.
I believe this fits well under the "fuck around and find out" doctrine.
It's all in the contract... in the event of termination, Twitter reserves the right to perform electroshock therapy on you in your exit interview until your memory of this employment is removed.
It's boilerplate.