Clarification of my hasty point: When I buy a set of disc brakes for my bike, the mfr provides lots of detailed information about - for example - what kind of brake fluid is required. There are tons of DIY videos, posts, tool kits, and other resources out there re: how to bleed the brakes, how to test, "dos and don'ts," etc. I don't see any obvious pushback from bike shops and/or manufacturers on this. They seem to want the general public to have the best available info. Now obviously no one is encouraging amateur mechanics with low competence / confidence to work on their brakes. Never have, never will. Everyone agrees that taking your bike to a good shop if you aren't willing to take on the learning curve and responsibility is the right course of action. Not disputing that. My point is that no one is trying to bury the key info needed to work on the brakes effectively and safely.
My point was that I'm not aware of any bike components that have indemnification legally mandated with the manufacturers. In the ski world, it's the indemnification that provides the binding manufactures with legal liability protection (or at least that's the idea, not sure how much that actually "sticks" in a court of law).