Same. I think it's a mix of that and this "presenter voice" everyone thinks they have to use. My ADHD brain doesn't focus on it well because it's too slow so it's useless to me but all my life I've been told when presenting I should speak slowly and articulately while the reality is that watching anyone speak that way drives me nuts
What's great about writing is that readers can go at their own pace. When speaking, you have to optimize for your audience and you probably lose more people by being too fast vs. the people you lose by talking too slow. I have to say I appreciate YouTubers that go a million miles an hour (hi EEVBlog). As a native speaker of English, I can keep up. But you have to realize, most people in the world are not native speakers of English.
(The converse is; whenever I turn on a Hololive stream I'd say that I pick up 20% of what they're saying. If they talked slower, I would probably watch more than every 3 months. But, they rightfully don't feel the need to optimize for non-native speakers of Japanese.)
This is why I hate the trend of EVERYTHING being made into a video. Simple things that mean I have to watch 4-5min of video and have my eardrums blasted by some dubstep intro so some small quiet voice can say "Hi guys, have you ever wanted to do _x_ or _y_ more easily?" before finally just giving me the nugget of information I came for.
I wish more stuff were available in just text + screenshots..
Some of those people seem to be speaking so slow that it is excruciating to listen to them. When I find someone who speaks at a normal speed and I have to slow the video down, they usually have more interesting things to say.
That said, tinkering before and after youtube has been two different worlds. I really like having video to learn hands-on activities. I just wrapped up some mods to a Rancilio Silvia, and I noticed my workflow was videos, how-to guides and blog posts, broader electrical information documentation, part specific manuals / schematics, and my own past knowledge. I felt very efficient having been through the process before, and knowing when to lean on which resource. But the videos are by far the best resource to orient myself when first jumping in to the project, and thus save me a lot of time.
They're probably reaching some YT threshold to have more ads show on it