> Is there a term for this sort of brain dead contrarianism?
Reactionary[0]? Trump and the MAGA movement embody this desire to return to the "golden age" which is an idealized period in the 1950s where you had a factory job, a house, a family, and a simple life. Of course, "idealized" is the keyword there because it ignores the state of civil rights, medicine, workplace & car safety, etc. at that point in time.
Anyway, I think that's the term you're looking for. Contrarians are annoying, reactionaries are more akin to cult followers.