OP, you are not being called a liar and no-one is being horrid.
You have asked us if you are being unreasonable, 99% of posters think you are, you keep changing your story and moving the goalposts, and you think the sun shines out of your cute little monkey's arse.
Fact is, with such an obstinate and argumentative and stubborn mother, I fear your boy's cheeky, rude, and obnoxious behaviour will only get worse.
And whilst I agree that respect shouldn't be automatically given PURELY because someone is a generation or two older, that doesn't give you a free rein to be rude. and especially not if you are a child. It's got fuck all to do with children having 'personal autonomy,' as some usernobody said. That is a stupid remark. Kids deserve respect, and to be listened to, but they need boundaries and rules, and it sounds like your boy has neither.
Never mind, at least @usernobody agrees with everything you say on this thread. 🙄