One thing that I do, and let others do, but seems to annoy a small minority of others – if I’m riding up to the summit (say, top of Spooky Wood) and I’m not stopping, I’ll ride through the folks hanging around beside the trail and keep going. Not people on bikes waiting to ‘drop in’ but the ones bimbling around getting ready to leave.
I do this and it really seems to wind some people up. Even when I make eye contact and say “hi” to give them a chance to go first if they’re ready.
One time at CyB there was a big group chatting away at the top of a long climb. I roll past into the next section and a couple of them set off in “hot pursuit”.
And I was holding them off fine until I got a hole in my tubeless tyre, at which point one of them rolled by and THANKED ME FOR STOPPING!
I probably shouted “I didn’t stop, I’ve got a flat”.