His demand is: let me invalidate votes I don't like.
He is attacking the meaning.
Humpty isn't asserting the right to define words. He's denying that words have definition.
But Trump does it in earnest.
"Enemy of the people" means nothing to him.
"Absentee ballot" means nothing to him.
"Spying" and "treason" and all the other accusations he throws around? Nothing to him.
Because strong = good.
But it's not a joke. That's the world he lives in.
"Only Absentee Ballots acceptable!" means count the votes he wants to count and discredit the rest.