I got into machine rebuilding after buying a reasonable 1950's machine shop worth of equipment a few years ago when I started in the auto industry after my master's degree. I happened onto a Craigslist ad of a machine rebuilder going out of business near the office and I picked up basically the whole kit -- cast iron surface plates, power and hand scrapers, bluing medium, etc etc. It took another 6 months before I ran into a guy who was willing to teach me to use all that equipment, up near Flint. He spent a whole career doing fitting and repair for a CNC dealer traveling all over the state and a piece of the rest of the midwest. He was just about the nicest guy I've ever done business with, and he supplies equipment and advice to a huge percentage of the Youtube machinist crowd, plus he saved me the couple grand it would have cost to go take one of Rich King's classes.
All in all, this is a great skill that will persist for a long time, longer than you might think, even if modern machines use replaceable linear rails rather than scraped ways. If you feel like taking it up, watch one of the many Youtube videos from Stefan Gotteswinter or Keith Rucker. Look into the equipment, but think about building your own carbide sharpener, scraper and handle.
I assume he is talking about Richard King. I don't think he has his own channel. but as mentioned Stefan Gotteswinter and Keith Rucker both have videos of the scraping skills they learned from him. (Rucker has actually hosted several of King's classes in his workshop)
edit: I clearly misread the end of OP's post. Definitely not talking about Richard King.
He did years of scraping before he met Rich, but he did take a Rich King class to learn power scraping. Made it easier to justify skipping the expensive class for me.
He doesn't have one, but Solid Rock Machine did a tour of his shop a while ago. He mostly supplies advice and equipment through the grapevine and Practical Machinist.
All in all, this is a great skill that will persist for a long time, longer than you might think, even if modern machines use replaceable linear rails rather than scraped ways. If you feel like taking it up, watch one of the many Youtube videos from Stefan Gotteswinter or Keith Rucker. Look into the equipment, but think about building your own carbide sharpener, scraper and handle.