Veritasium used to do a lot less a/b testing on his videos and I guess maybe he just got too big too fast. The thing that bothers me the most though is that he went from almost exclusively explaining interesting scientific facts/experiments to a more "aggressive" style where a lot of his videos are about x being wrong and here is z reason why. And I personally just don't like that style, especially when it turns out that there is a lot more nuance than his titles would indicate. I mean what are the odds of an entire field being wrong , and the truth is actually in a 15 mins youtube video by a very general science channel?