I would say the people voting for Trump do have a problem with it which is why he is a thing, I disagree with your assessment (Evil Genius v Weekend at Bernies) which was in your post that I responded to. I agree with your statement above, which is evident in real-time.... they'll vote for a Potato. The candidate is meaningless. The only reason why the media is talking about the Potato is they got orders to follow i.e. bad polls.
Trump is basically it. If one votes for anyone else, its unknown who is running things... it may very well be Trump, we don't know.
At the end of the day, they'll never provide a real candidate, its about providing a candidate they can control in part.
(I don't vote, and I am not saying anyone should vote for Trump... but realistic any other vote doesn't make sense because we don't know)
Right now, at least for a few days or weeks.... they have to come up with a way of taking either Trump or Biden out of the race.