That is a valid criticism of Trump that is not true for biden. What op said was that any valid criticism of biden would also be true for trump, not the other way around. So trump has all the bad stuff that biden has plus the whole traitor, convicted criminal, narcissistic cult leader thing
It’s not that they doing believe it. They want it. A sizable part of the US (and any country tbh) would prefer that there was a single person with all the authority