This is a behavioral pet peeve but I don't like when people call each other out (in a rude manner) on their dama or performance flaws. It's good to constructively criticize a homie if you want to see them progress faster and at a higher level but sometimes it's just a buzzkill, especially if that person is a beginner or is early on and just learning. If you're gonna do it, do it nicely or not at all. Especially because kendama - when not done in a competitive setting - should be all about having fun. It's not nice to constantly tell someone that they didn't do something right when there technically shouldn't be a right or wrong way. Some of my fav Japanese lady slayers to watch straight up miss a trick and keep going after putting the tama back on the ken with their hand. LOL. Like - really it's about having a good time, who gives a shit? I personally hate hand string adjust but if I saw someone constantly do it, I wouldn't go out of my way to tell them they suck, or they're wrong. Sure I could express to or around them that I personally think it makes tricks look a little less steezy than they would otherwise, but I don't think it should be in anyone's business how someone plays the dama on their own time and enjoyment.