Earp, Boebert and Marge have no "skill". They have luck and the backing of the party machine and its money.
"The party machine" is a bit hyperbolic. It insinuates there is some big national Republican cabal pulling the strings. The fact is like almost all major parties the party is made up of many forces coming together for the purpose of electing candidates.
I think we have been through this before. U.S. House candidates aren't hand-picked by the party. In our entire history, we have had House members who have been expressions of the extremes of each party. They simply represent extreme districts and are often able to remain popular at a very localized level.
Money will follow because there is so much money in the U.S. behind every force even those relatively unpopular on a national level. There is also the belief that when donating to a candidate on the fringe they will for good and bad not compromise regardless of the party establishment's wishes.
Man, it's a lot of work being TERB's intellectual presence.