So, just to clarify...
The author of this piece has a strange message on the phone, from an unknown app, and grants access without learning anything else?
when the prompt presents you the options to allow or don’t allow “exited?” access to your “Twitter Accounts”, there’s actually no action performed even when permission is granted
That's the only way I can interpret this section. The author, not knowing why the message is there, or where it's coming from, just shrugged, said what could possibly go wrong? and allowed access.
And I would take tech advice from this person... why, exactly?