I think your critique, although pointed, is more “bollocks” than is his. He’s not making a linguistic point. He’s making a point about recent political linguistic tropes - which go directly back to the time when the Democrats had the south as a stronghold, and the Republcans were the party of Lincoln - or possibly of Congressional reconstruction. If not earlier.

If you draw the lines the way he does - racist anti-intellectual equality-hating pro-violence (heh - kidding!) anti-civil rights pro-war meatheads (no offense if you know anyone like this…), vs. the above-described “pot-smoking” (because no conservatives ever smoke up) “bra-burning” (GREAT compound - too bad no feminist ever did in the 1960’s - look it up) etc. liberals…

… then he’s right. The unstated salient, the underlying assumption, is that liberals are bad because they like the Other. Faggot-lover. Illegal alien-apologist. Osama-coddler. Terrorist. Ann Coulter and MM are as guilty of this as anyone anywhere- but I’m done trying to make the shameless feel shame.