I stumbled across SMA on YouTube a few years ago, Eric O is a master of his craft imho. Not many people would go the extra mile like he does.
A big chunk of my job is wiring repair and diagnostics (motorcycles) and it's interesting to to see how others tackle similar jobs.
Abom79 is also a good watch for machining, and Precision Transmissions for gearbox rebuilds.
I like to see people who genuinely know what they are doing and take pride in their work.
I don't think Eric O has changed at all, he has just got more confident in front of the camera.