My point is that this is a bad faith argument. The author pretends to care about "luxury" beliefs, but in truth, all he cares about is finding a cheap shot against feminist positions. He intends to delegitimize these positions by painting them as an upper-class fringe ("luxury") concern. Once this angle of attack is found, the author never stops to see that the same attack could be levied against any number of political positions that he himself might agree with, because he was never interested in a real debate to begin with: he only wants to smear and ridicule.
The point is not that the examples are also "correlated" with something else, it's that they're carefully cherry-picked and made a target for an attack that would work against conservative positions, carefully excluded by the author, just as nicely as it does against liberal positions here.