MAGA is structurally a lot closer to a radical political movement than to right wing politics in the traditional sense (which, to be fair, is mostly dead in the U.S. and that's a huge problem that the left also has a lot to answer for). I don't know how you can possibly read my comment as advocating for MAGA, especially the varieties of it that are most overtly and blatantly hateful towards marginalized groups.
In European terms the moderate right is still well represented in the US - by the leadership of the Democratic Party. The fact that there are a lot of liberals, progressives, and leftists who vote for or even belong to that party doesn’t mean they are an ideologically left party in their policies. It’s a symptom of a self-serving, self-sustaining two-party system. This is why there’s so much infighting and such acrimony within the party. There’s a real tension between people like Mamdani or Ocasio-Cortez on the one hand and the sort of Democrat that can win a general election someplace like Oklahoma.
MAGA is just the logical end-point of any right-wing ideology. Just like every far right party in the world, it wasn't birthed in a vacuum. It's just amping up the same rhetoric that has been the bread and butter of right-wingers for half a century: perceived unsafety, anti-immigration sentiment, destruction of social nets in pursuit of these ever-elusive trickle-down economics, scapegoating of minorities...
I don't know how "radical" you can call it since it was popular enough to get the White House and most of congress. Twice.
I really don't see what in right-wing ideology has ever served the cause of minorities and marginalized groups, even before MAGA.
It served the minority in South Africa during apartheid. It did so, of course, by using state power to marginalize the majority. Conservatism becomes more complex than just “small government” when it’s combined with colonialism and racial supremacy as the status quo to conserve.