For the record, I think there is an extra layer of distinction that can be drawn specific to the term.
First, there are three different terms, that IMHO can but don’t always mean three different Political POV.
Conservatives, Republicans, and MAGA (also referred to disparagingly as RWNJ and MAGAts).
Someone can be Conservative on one or more issues, but aren’t absolutely in the other two categories. I can agree or disagree, but when used in most cases as a standalone term, tend to be synonyms for the next two terms. The main exception is as a modifier for Democrat, which tends (please note, broad categories) to be applied to former Republicans who can’t stand where MAGA is going, or something approaching a centrist POV (such as actual financial conservatives and social liberals).
Second term, Republican, is/was a purely political grouping, registered voter and all that. Again, historically, someone I will generally disagree with on priorities, but not always self evidently evil in the way fascists or Nazis are. But, again IMHO, outside of a few remaining outliers, especially those in purplish states, they’re mostly gone, with the political wing being MAGA, and the individual party members becoming the “Conservative” Democrats above, or identifying as independent, or just giving up on the whole thing.
And MAGA, well, from the Top Down, it was homophobic, bigoted, racist, grifting cult of personality wearing the skin of a political movement. To use insulting terms for it is fair and accurate. Are there individuals who can be good people otherwise while supporting said cult? Sure, but it doesn’t mean they aren’t part of an evil cult.
As for religion, I’m kind of in the same POV. Using the most commonly found one on the boards and the West in general, Christianity, there’s a huge number of sub-sects, splinters, and out-and-out wackos. Would I use a direct insult for Christianity in general? No, but would I use one for Christian Nationalists? Absolutely - because once again, it’s a political movement with abhorrent and direct political goals, which I have every right to judge, while a Christian (no other modifier) runs the gamut from saintly (even if I disagree with them) to “I hope your God does exists and I do not think you’ll be pleased when you meet them”.