Well, I'll say that as a degree'd engineer (and therefore not a layman to the genre), nothing he does is beyond my capability to calculate or research myself. However, the fact that he does all the legwork in an entertaining way for topics that I'm interested in makes it a great series to watch and quite the time-saver for answering a lot of "what about...." questions that pop into my head in a fraction of the time that it would take for me to do it independently. But if it's not your cup of tea...nothing wrong with that, either.
I enjoy watching "everyday astronaut" for the same reason. I have a degree in aerospace engineering and I know most of the raw information presented there from my university training, work experience, and life-long fandom of the space program, but the packaging of the topics presented along with contextual narrative tied to current events makes it entertaining. I would certainly never say "well, it's great for laymen but I'm too smart to learn anything here" about his channel since there's always something new to pick up even if it's just another angle to look at something you felt you had a solid bead on.