Your last clause makes this beg the question, I think.
A lot of people believe their own views are dangerous for democracy, and limited to protect democracy. They just also don't believe in protecting democracy - sometimes explicitly, sometimes with lip service to a "democracy" that's little more than nationalism.
Outside of a few teenagers flirting with monarchism, the number of people who don't support democratic republics are vanishingly tiny enough that most references to them are actually straw man arguments.