I really liked his relaxing, calm MacBook repair and data recovery videos, where you could learn about soldering and electronics repair while watching. And I had no problem with a little bit of honest advertising for his own business.
While the right to repair is important, his videos about it are a lot of rambling and complaining about the same thing again and again. The titles are also often misleading or click baity. I can't watch them either. I hope they work for the right people, though.
Who knows. Java is a much bigger programming language than Rust. Might be easier to find developers. But obviously it depends on interest. Who knows.