Obviously Trump is currently the establishment since he’s the one in power right now, ...
Trump and maga are not the establishment. They are extreme radicals with a completely different agenda than the establishment. Their agenda is to do away with the Constitution and replace it with an authoritarian regime centered on christian nationalism and fascism--of that's not radical, what is? The fact that they managed to take over the government doesn't make them "the establishment" unless you accept that they will maintain power and thus become a new "establishment".