The Trump supporters that I've spoken with stand by their views 100%, but don't think it's worth the hassle of arguing with progressives. Most recognize that Trump is not a good guy, but they feel his campaign platform was what the country needed. For many right-leaning people, I personally think many who voted for him were voting for what they considered to be the lesser of two evils.
In my experience if you have an opinion that doesn't fall in line with progressives then you're labeled (as TheAdamAndChe noted) an *-ist. We figure its easier to avoid the headache of being shouted down and labeled something we aren't.
As an example of this, wecan agree with the sentiment "black lives matter" but disagree with the BLM organization then we're called racist. All of this despite the fact that our reasoning could be the fact that the organization's leaders are self-admitted "trained" Marxists or that it pushes intersectional/identitarian politics with its platform. What's more, any attempt I've made or seen others try to make at having a conversation with those that we disagree with ideologically ends in shouting, ad hominem attacks, and in some cases pushing false narratives to our employers in an attempt to (quite literally) ruin our lives. Ironically the ones that refuse to have civil discourse with us seem to pride themselves on how tolerant and open-minded they are. And all of this happens because we disagree on a few key issues.