Literally as stupid an argument as you could make.
Once it was clear to the country that Biden lacked the mental capacity to be President, what happened?
For the good of the country, the Dems rallied to push him off the ticket, even though it was too late to have a primary and risked losing the election (which they did). Biden didn't drop out because he wanted to, or because the Republicans made him. The Dems cleaned their own house.
Republicans, on the other hand, support a President that (on video) couldn't tell the difference between his wife and a women he sexually abused, confusing the two.