Is he wrong?
Yes, they are wrong and it is complete garbage.
Otherwise, why didn't Trump already abolish the entire constitution and voting straight after the 2016 election just to make himself a dictator?
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Because there were guard rails in place. Now the Supreme Court has said he can't be prosecuted for official acts and he has a VP in place who is on record as saying he wouldn't have certified an election that Trump legitimately lost.
Things have changed since 2016, go ahead bury your head in the sand about it. Don't come crying to anyone else when the leopard eats your face, though.