No and I'll echo RINO Tom said, they don't have to to appeal to non college whites. What is not popular to these voters is far right economic policy like abolishing SS, as evidenced by Rojos underpwrformance and Blake Masters getting demolished.
RoJo has had three consecutive performances that extrapolate out to clear national victories! (Though, to be fair, three times in pretty good Republican environments.) Masters lost to a popular incumbent by 4 points, which given the general lean of the year was pretty bad but also wasn't exactly getting *demolished* or anything.
The day the GOP nominates someone *exactly like* RoJo at the national level is the day they win a comfortable national majority, absent an
excellent environment for Democrats. (Someone *exactly like* Masters would much-more-likely-than-not lose, but I don't even think that would be
hopeless given a sufficiently strong environment and weak Democrat.)
The Republicans are still the party of the energy companies and more established businesses, the Democrats still back unions and working class policies.
These are not the same. I'm not even sure they're the same
inside the Democratic coalition, which is where you see this sort of assumption, but they're quite different outside of it.