Initially, I dug the content Matpat made, but as time went on his videos became increasingly moronic to the point he was coming up with non-sense out of his ass. Not only that, but a lot of his claims are just flat out wrong and his use of "science" is dubious at best. It doesn't help that the character Mat plays on screen is an obnoxious, smarmy douche that tries too hard to be funny. I think it says something about his credibility when there's a plethora of Youtube videos debunking him.