OSR repeating this ‘liberal arts’ line is a typical example of one of his worst habits, which is that once he comes up with some point, he repeats it ad nauseam at every opportunity he gets. This is what gives his posting its spammy quality (and of course is a classic sign of not being very bright).
He's far from the only offender in this regards, (IceSpear was probably the worst in forum history actually), but he is no doubt the worst current one.
The difference is IceSpear was capable of original thought but also relished easy fun at the expense of other users' forum experience. OSR mindlessly parrots whatever he sees reads on right-wing discussion boards. He used to be merely a bad poster, but he's now trying so hard to get validation from online Republicans.