Mulling this a bit.. I think Trump should own it.
Yes. I am President Tweety. I like to practice my first amendments rights. Until Twitter decides to censor me.
It probably would be good if PDJT mirrors his 'tweets' to a few of the other alternatives so that by the time Twitter decides to censor him (which I predict they'll do before the next election), the switch can be made without too much disruption.