This is the way today's incompetent, inexperienced, insecure administrators treat teachers who are more experienced, more secure and more knowledgeable. They beat them down.
The APs who got the job, heaven only knows how, is threatened by teachers who not only know more than them, but are better teachers than they are use this technique all the time. An AP who could not pass a licensing exam without help and who got an administration degree with borrowed papers is incapable of anything but ruling by abuse.
Such is the system in too many of the schools I am familiar with.