I doubt most of these people have bothered to read that generation much, besides condemning 90% of them as micro-aggressing white male heterosexuals. They are on the look out for the new disabled lesbian of color who writes about prejudice and agency with ray guns. I kid you not. If they did read Heinlein they would ban him for his weirdo later work anyway.
Freegards
While I very much prefer Heinlein's earlier works, some of his later stuff is still quite good. "Job: A Comedy of Justice " comes to mind.