If I'm remembering him correctly, he did a lot of video from the VCR and DVD era (i.e., before youtube had high res videos and everyone went to streaming).
I'm sure the standard for production and capture was more important back then, and the rate of production was lower (i.e, people weren't producing two hours of produced video each and every week.
The flip side of that (this isn't aimed at raffan) is that people who bought the DVDs often thought that what's in each one was definitive - "the way", and the more confident the presenter (or assertive), the more credible.
The guy who got me into woodworking had me convinced that nobody other than Pat Warner was worth reading when it came to router use. Pat was always helpful and courteous, but his method of stating something was "the only way" was very convincing to my friend and I was surprised that when pat came to the forums in the US, a lot of people discarded what he said as just being someone else. Still have a couple of acrylic router bases, or plexi or whatever you call it - sitting in my cabinet gathering dust because I don't do much with routers other than inaccurate work (waste removing in something that will be trimmed to size by hand tools or very occasional template routing for guitar bodies).
Back to raffan and some of the other turning instructors - they can provide information that's 5 times as good as the next "something for nothing" woodworking presenter on youtube and still get 1/50th of the views. Cat's out of the bag and it's probably not going back in.