Catch:
A dose of reality is needed here. Generalizations won’t help much, but observing trends might help a bit. Chinuch has suffered yeridas hadoros, just as every other aspect of our lives. That won’t change on its own, and our mission is to slow the process, one rebbe, one child, and one class at a time.
Motives for anything can vary. Find me two workers at a grocery store, and I can probably show you two different set of reasons for choosing such employment. Chinuch is no different. Yes, there are many who choose chinuch because they wish to remain klai kodesh. If this excludes the passion for chinuch, the range of needed skills, etc., we have a problem. And such scenarios are unfortunately true. It can result from the message imbued in our yeshivos that doing anything but serving as klai kodesh is against the Ratzon Hashem. It is sad that this is patently untrue, and the Torah states this multiple times.
It is likewise an unforgivable tragedy that we have allowed chinuch to deteriorate into a career without adequate compensation, subjecting those who enter it into a world of poverty and disgrace. No, the kavod given to a rebbe does not convert into grocery dollars or pay his utility bills. the financial crunch of yeshivos is way bigger than the comment fields in the YWN-CR, and the brains needed to address that are greater than what we can offer.
I am not siding with anyone here, not pro-rebbe, not anti-rebbe. There are way too many variables here, and the efforts to malign an entire career or group of people are pitiful and pathetic. Dumbing ourselves into denial that the rosy scene of chinuch is live and well is not a better choice.
Lastly, assuming that every rebbe spends their spare time thinking about your son is undue optimism. It would be nice, and a few phone calls to report nachas would also be nice. Some do that. Many do not. They may be unable to do so, since they are busy with household chores, unable to hire cleaning help, or doing the shopping. They may worrying how to make ends meet,, taking care of their own children. Reality is all we have. Fantasy may be a nice leisure activity, but we cannot stay there for too long. Chinuch is in real trouble, and all of us are somehow part of the problem.