No need to get offended or frustrated. This forum exists as a resource for people, so I try to call out incorrect information posted when I see it. I don't mean it to be adversarial or anything like that - just want to make sure someone new who got to this thread from Google doesn't see your post and make wrong assumptions.

"U brakes are fine for general road riding but not great for riding off road" is a general statement about U-brakes and you are not "obviously talking about the OP's bike," nor am I taking your statement out of context. It's important in a community like this to be able to recognize when someone is trying to tell you something useful and not just become defensive and angry. We're all in this together!