Ask Lemmygrad

I see. That's good propaganda strategy, and I agree that cutting people who have potential out in "some sort of purity testing way" is bad. That's the sort of thing insufferable shitlibs do and is a big reason why people all across the political spectrum despise them so much.

... although the "who have potential" part there is important. Fascists, famously, don't care about the norms of polite conversation or the marketplace of ideas or any of that, debating with them only legitimizes their ideas and is a serious mistake. The modern-day full-blown MAGA chud is the same way, even though they may not be a self-aware fascist. Unfortunately, many of our families are full of these people. They don't respect this nuanced discussion and compromise stuff at all. Quite the opposite, they think it's weak and gay or whatever and will use it as a weapon against you. These are people who literally don't respect facts or material reality itself.

Your relative, for example, hates rich people. Assuming this is actually true (a sort of faux-populist hatred of "elites" is an integral part of far-right propaganda and doesn't count), that's already much more potential then some of the absolutely hopeless bootlicking trash that many of us have to deal with. Even so, you said earlier (and I agree) that if something is never going to make any material difference, then it's pointless, so... have you convinced this relative to significantly change their political alignment? Did you get them to stop prioritizing triggering the libs (i.e., bigotry), over everything else? If not, then nothing was achieved, because that's the main mechanism that the fascists use to mobilize the right.

Sometimes, open hostility, ostracism, and other things that aren't nice are actually the most effective strategy. I've spent plenty of time doing exactly what you suggest, and in retrospect, in most cases I should have simply told them to go fuck themselves and seriously rethink their entire world view if they ever want to talk to me again. Personal consequences are the only thing that these people understand.