Thank you very much for your advice. I agree with your opinion. But how do we know what others' goals are? Do we ask them off the mat or do we guess and make judgement based on their styles? I don't really talk to members in my dojo....(My fault.)
I encourage a dialogue between all students in my dojo (and with myself as well). Verbal feedback during waza practice can be a valuable tool for identifying patterns in ourselves that we are not aware of. More importantly, a dojo should be a functional community, as opposed to a gym where you go in, work out and leave.