Inspired by threads in which I was told asking a question is rude because "people feel awkward saying no" and "if the person wants to, offer to do it yourself and if they want to they'll tell you not to and offer instead"
AIBU to think people shouldn't play these stupid games? Just say what you mean for Christs sake. I'm sure an adult can take you politely saying no to a request. All this does is cause confusion and create weird social norms that make no sense and confuse the hell out of people who aren't neurotypical or who are foreign.
Stop it.