that’s a decent list, but I would garner to say that that wasn’t all done “easily” or “effortlessly”. If turning wrenches is your day job and you got the ability to get parts and knowledge easy, then of course achieving these results will be much simpler than a regular joe.
“most” guys are at the mercy of whatever they are told, and they spend money and blow parts trying to figure it out.
That list has some 8 second passes, how many cars have a shit ton of work done to them or even a little bit of work to them and are not on that list. It’s way more than the 30 or so you snapshot. It’s in the thousands!