It is extremely obvious that he is being flippant yet geniuses really sat in the comments arguing about whether anime is satanic and using his sarcastic joke to "prove" he is a shill or criticize his conservative opinions
https://kotakuinaction2.win/p/15K6SmwTu2/matt-walsh-gets-asked-whats-your/c/
Yes it is his dry humor. He might as well be British with how dry it is lol. I am much the same way hence why I first started watching him way back when he had just started.