Perhaps it's that many of us don't spend our time promoting our greatness
on internet forums. We just quietly carry on our lives, doing what we do.
I think there's a difference between promoting greatness and having thorough discussions about building things. you can't really do the latter in any great detail as you get derailed by folks talking about whether or not something is safe.
Not contending that the youtuber in the video shown does anything great - he has the "something for nothing" gimmick type channel - It's a huge draw. I doubt he's made anything notable unless picnic tables are notable.
My point was that I called mark a doer, not "a great" or a "man of greatness".
The doers quickly tire of forums because inevitably a talk of doing will get bogged down in a combination of "I'd go to paul sellers for that" or "you did something there in that last sequence that should never be shown publicly"
There's a smaller forum in the US that used to be relatively immune from this kind of stuff (the format doesn't draw in beginners). This same type of topic just came up and the original poster went to great lengths to try to generate interest in the table saw topic (strangely, in the hand tool side). AT some point, someone finally spoke up and said "your safety with your saw is your choice, maybe we could move on".
They weren't advocating unsafe practices - but rather "please - we've heard this one 4000 times already - who wants to post something they're making".
Ultimately on that forum, things have gone to the folks who want to talk about table saw safety or a new type of crosscut sled. The same thing happened when there was a true great on a blue background forum - he got chased off by people who wanted to make sure that the discussion didn't advance past table saw safety or which online guru was a nicer person.