Well there is personal consideration but also some ethical and professional considerations to do:
- what is the need to hire and retain someone with teaching experience, publication, and specialization when any junior can just copy and replicate any course, without any acknowledgment and sometimes even without having PhD?
- I have been junior myself and progressing with my career I have mentored my junior colleagues but I find that diplomas and actual teaching experiences are important.
- I do not think as professionally and ethically sound to teach a specialized subject that I have not studied myself at length.
But many thanks for your feedback :-)
A great deal depends on the subject and how it is done.
(a) It could well be the case that the material is such that it can easily be mastered by anyone.
You will probably disagree, but
we do not know unless you provide additional details.
(b) It is possible that they have done or are doing a good job.
You will probably disagree, but
we do not know unless you provide additional details.
(c) If the students are satisfied and the employer is satisfied, then your views on their qualifications, experience, etc. are somewhat misplaced.
(d) You are assuming that you were hired because of your "experience, publication, and specialization". That might be the case, and it might not be the case.
What sort of comments were you after anyway? We could hold your hands and weep with you, but that will not do anyone much good. My advice: (a) suck it up; and (b) find a way to work with those "shadow teachers", instead of taking an ultimately self-defeating attitude.