On the Rossman front, to be brutally fair to the guy, his beef is not just not Apple, it is the whole right to repair across the whole spectrum of goods, regardless of the makers name / brand. As he rightly states, years ago no matter what you brought in the electrical / electronic arena, it almost certainly came with a schematic printed and attached inside or on the back of the equipment or even the owners manual / instruction book.
Yes I have seen some dodgy repairs that he has done BUT what we don't actually know, is what does he tell his customers about the repair, he may for all we know, tell them that it is nothing other then a temporary fix and recommend that they purchase a replacement soon before it goes again.
Having watched a lot of his repairs, he does go to lengths to explain to the viewer why he does what he does normally, and he says that he would rather fit a replacement part if only Apple would make that part available, such as a motherboard when tracks have been destroyed by corrosion etc, so he is not quite the cowboy that he is portrayed to be.
In all honesty, I have done many of the types of bodges that he has performed on damaged tracks by soldering reinforcing wires along the tracks pathway on multiple tracks to repair PCB's in gear that have suffered breaks due to being dropped or other rough handling and those items are still going strong today, many years ago I patched them up.