Yeh find someone better , many reasons but you've identified the main points already , In the main , to pass a FI course you have to give detailed briefings on exercises , I fail to see how you can effectively carry out an exercise that hasnt been briefed. If you are landing in 15 kt crosswinds you are probably not in compliance with your schools flying order book , you maybe but it would be worth checking . 15kts (if it is all Xwind) is the limit for most light aircraft with ppls at the helm not to mention students . Good experience but it could also be detrimental if you get it wrong. A lot of instructors are fiercely territorial about their schools , as are a lot of students . However most have never worked or studied elsewhere , you must go where you feel comfortable and happy , as I said above and seconded by Whirly its your flying , choice and money . I personally for many reasons have been at four flying schools some good some not so good but I found one to suit me . And thats what you should do , even if it means looking a bit further afield . Its actually quite incredible when you sit soemtimes in a clubhouse or read on a forum people saying they hated their flying training and were glad to finish it to get rid of their instructor , mmmmmmm go with your instincts , if your not happy change . Even in the raf when they are paying you if your not happy with your instructor they will swap .
Bite the bullet and change