Imagine if habituated liars had a 'delete' what they just said option? Easier, for them, then denying what they said & \ or twisting the words of what was said.
Yea, sh-t happens. Personally, l'd "delete" #Mastodons delete option. But, that's just me (my generally honest personality)
Of course, with a little more thought, there could be a timed edit option (to correct mistakes. And the edits could be made transparent)
But, transparency, honesty, works against some folks agendas