Context
It’s from the Behind the Bastards series about G Gordon Liddy who, in addition to being a bumbling idiot with delusions of competence, was a BIG fan of the original Nazis. To the point that he would keep bringing up the SS all the time, including to American WWII veterans
Apparently what he meant was that the kind of character Ben Stiller is known for playing would be a great representation of G. Gordon Liddy, not that Ben Stiller is a nazi. (phew.)