I know a bunch of these do the annoying YouTube thumbnail thing that is very much adjacent to your complaint but I would argue they do a pretty good job of being excited about the topic but not overly dramatic in the presentation during the actual video.
General topics:
https://www.youtube.com/@Wendoverproductions
https://www.youtube.com/@halfasinteresting
Science
https://www.youtube.com/@SciShow
If you just want to learn about astrophysics. Many build on each other so you might want to consider watching a bunch of the early ones first.
https://www.youtube.com/@pbsspacetime
Engineering. This guy's voice annoys me but some of the videos are still quite interesting so I linked this specific one about exactly how train wheels/tracks work. Never would have guessed the level of design involved.
https://www.youtube.com/watch?v=Nteyw40i9So
As a legal matter, maybe not. As a practical matter I'm pretty sure it is evident.