Is it ADHD that makes it far, far preferable to just get a page I can review and pore over and repeat a few times, or is it just a learning style that isn’t passive?

Probably the learning style. I don’t have ADHD, but I can’t tolerate someone slowly explaining something over a 10 mins video. I know specifically what I need information about, so I need to be in control of the experience. A text tutorial I can skim until I get to the relevant part, but videos usually feel like they’re wasting my time. The only time I prefer videos over text is for DIY instructions where the physical actions are better conveyed in motion.

(Feels related to that I very rarely watch TV or films, and even when I do, I get antsy after half hour of just sitting around staring out of my face. So I tend to watch movies in half-hour sessions, which I often can’t be bothered to pick up again lol, and leave them unfinished for years 🙈 In a nutshell I much prefer video games as a hobby :D)