That pastor isn’t promoting nonresistance Anabaptism at all, though. I would dare say his actions won’t lead anyone to the conclusion you listed above, and he’s not even trying to get them there.So... if pointing out the depravity of Donald Trump simply convinces people to support Biden instead, then in a spiritual sense what really has been gained? However, if the pastor's message brings conservative Christians to their senses regarding the false hope and misplaced allegiance they have placed in strongmen and government coercion, drawing their loyalty back to Jesus where it belongs, then more power to him. If this discussion is a theological one, then conscientious abstention is the answer
Overall, institutions are probably more evil than authoritarians - an authoritarian you can get rid of, but dismantling corrupt institutions is really, really hard. An authoritarian has a hard time making a case for why he should be the big cheese. Yet institutions pretty much take for granted they are an automatic authority on almost anything.
The present day state in the west is unaccountable, undemocratic institutions running almost everything: giant, private businesses like Google deciding what we can and can’t say (Google doesn’t allow our tracts office to run AdWords over Easter because mentioning Jesus’ resurrection is not a “fact”); quasi-private boards like the Federal Reserve deciding to print money and empty out Americans’ savings accounts; universities promoting all kinds of outright filth who then gatekeep who can get an education; “medical boards” deciding on a whim we need to shut down church for a year and not let you visit your elderly parents.
The public has largely lost faith in these institutions. They are intellectually and morally bankrupt. They sold themselves out to political ends (much as you correctly see the evangelical right sold itself out to a political faction). And quite a few people simply don’t care what storied institutions have to say anymore.
There is, of course, a third way out of this.