"Average guy who follows Roosh/Expats forum that I've read"
Roosh was a libertine PUA who came to realize how empty that life was, and turned his compulsive quest for validation to religion. I'm sure he's still just as much a gaping emotional void as ever.
His "followers" are even greater losers than he is, because they can see how unfulfilling it is yet aspire to that route.
"-Seems to want to find a traditional wife to "submit" to him"
Yes, because they think she'll be barefoot, naked, and in the kitchen for him and only him, and will put up with him being a giant fucking morbidly obese loser who watches anime 12 hours a day.
"-Is critical of lefties"
They're more hardcore right-libertarian types who think even paying modest taxes is oppression. They think they're ubermenschen who blaze their own trail in the world, but are really just whiny brats.
"-Tend to have yellow fever"
Yes, a lot of them are racists. It just so happens their racial prejudice gives them a boner. They think women from poorer Asian countries (often Thailand or the Philippines) will do anything to come to America. A lot have "borscht fever" and idealize Slavic women, or "salsa fever" and idealize Latinas. But same thought process.
The other subset of "expat life" people are the internet marketers. They're a bit less political (operative term "a bit") but still think they've hacked life. Like a lot of "influencers," they're legends in their own minds, presenting a lifestyle they don't actually live.
Not that there aren't expats elsewhere who love the culture and want to live more cheaply, but they're less vocal and bitchy about it.