Thank you for spelling it out.@Tez3
STFU and train.....hmmmm. If you are alluding to one person's insistence to just talk and not train, or labor the point of 'using their mouths to train' here in this forum and if you are sick and tired of seeing it then there are two things you may consider doing. One is to ignore it and more importantly, two, leave.
Switching schools might not be a bad idea for a student who is just starting out in the martial arts but a student who has been going to a particular school for years and has put in tremendous time and effort might not want to switch.@Tez3Back in the dojo where students pay to learn, if it does get to a point where a student is obviously not satisfied with his or her training then recommend another school, its their money after all and obviously again the teacher has failed to set and meet expectations.
Another option could be for the student to discuss to the sensei why they're dissatisfied and perhaps come to an arrangement. Sometimes it can be a simple misunderstanding that can be easily cleared up.
True. And communication is key to good teaching and good learning. Shutting up isn't exactly the best way to communicate.