For reference, this is the persona Matt Walsh had adopted when he said these things.

I see a deeply immature man who insults people on Twitter but lacks the courage to face them in person. I see someone who fashions himself "politically incorrect" but is really just a cruel and bitter old man who thinks it's funny to mock the disabled. I see a man with no honor who launches vulgar attacks on women and then lies about what he said. I see a phony who brazenly exploits the fears of the American public. I see a guy whose recklessness and greed drives his businesses into bankruptcy, and I see a guy who tries to silence journalists when they report on it.

Source

You say you want someone who's politically incorrect. You're so desperate for political incorrectness -- a supremely ridiculous reason to vote a guy into the Oval Office, but never mind -- that your esteem for him only grows when he belittles the disabled, mocks American prisoners of war, calls women dogs, calls his opponents p*ssies, calls for the assassination of women and children, says he'd like to have sex with his daughter, brags about his adultery, etc.

Source. And when he was criticized for the over the top nature of this particular article by Trump supporters, here he nonchalantly dismisses a reader offering this criticism, thinking that his position was the more popular one.

I have spent months calling Trump what he is: a conman, a tyrant, a pathological liar, a flamboyant despot, a fraudster, a big government liberal, progressive in a very poorly fitting and unconvincing conservative costume, a Planned Parenthood apologist, an unrepentant philanderer, a crook, a creep, a fascist with a spray tan, a reality TV Mussolini, a Caligula with bad hair, etc.

How could I possibly vote for a guy who I've just described this way? How could I possibly unite around this man when I've spent months correctly observing the fact that he's a scam artist who lies about everything, including his opposition to illegal immigration? It would be nonsensical. It would negate everything I've said about him and make me as big a fraud as Trump himself.

Source

This is all early 2016, and it seems obvious to me what happened: he thought Trump was going to lose, so he bet big on insulting Trump being the winning strategy. Then Trump won, and he realized maybe his wasn't as popular a viewpoint as he'd thought; and to stay relevant he had to adopt his present "Rough and Tumble Mountain Man" persona.