Let’s say you make an amazing new consumer gas central heating boiler, and shout about it on Twitter to your adoring followers. And if someone switches it on without opening the water valves, it explodes and kills them. You say “oh, the manual says not to do that”. How do you think that would fly?

Consumer products have to be designed to be safe against consumers, to a large extent. You can’t just add a feature, add a disclaimer that says, in effect, “don’t use this”, and blame the user if they use the feature.