I really enjoyed Veritasium for a while, but it seems like he's fallen into this trap. Click-baity, cookie-cutter videos.
On the other hand, while I didn't follow Tom Scott particularly closely, I always enjoyed his stuff, and when I learned that he called it quits, I was legitimately happy for him AND his followers -- better to quit while you're ahead than to wear out your welcome.
It's funny you mention Veritasium in particular, since he hates the clickbait as much as anyone, and made a video specifically about it: https://www.youtube.com/watch?v=S2xHZPH5Sng
tldw You're basically forced to structure your thumbnails and titles that way if you want your videos to actually be seen. Blame YouTube's recommendation algorithm, not the creators.
It seems more like he's using it as a platform for other producers under some narration bumpers. Probably smart way to build out the channel. I don't see a quality drop but there is the varying style from the differing 'producers'.