I don't think Trump's type of incompetence can be cured by experience. If I had to choose between two people who I don't think are fit for the job, one of whom is a decent human who seems to agree with me on policy, and the other of whom is an asshat who seems to disagree with me on policy, it's really not a tough decision. I would roll my eyes at Democrats who voted for Oprah in the primary, but come election day, I'd still take her as the lesser of two stupids.
Or, living in Indiana, I might take the opportunity to actually register a protest vote, assuming, of course, the Greens can find a way to nominate someone who isn't as ridiculously stupid as Jill Stein.