I agree that cuffs aren't common—I'd like to see more of them myself
As to whether or not there is a DA bondage community, I understand why you feel that way. Lots of it is just posting pictures and getting comments, nothing deeper. After seeing some interaction in a few discord servers, though, I'm sure there are pockets of activity that would be better defined as a "community". You probably just have to look off site, though I guess that would mean it wouldn't be a DA community anymore. Hmm...not sure. Can you be more specific? What are you looking for?