Twat is a social media platform for normies, and is not a back channel. He is getting normie eyes on it to wake up those he can, but more importantly this puts the fact that he has the dirt into the spotlight. Will hopefully provide a modicum of protection that others who have tried to expose this shit have not had.
He is forcing the dark out into the light -
This also is a way to establish a public 'chain of custody' for the info so it doesn't look like POTUS pulled it out of his ass to smear political opponents