I agree with almost all of the points you made, albeit with dialed down intensity. Those points you cited were the primary reasons I decided to make the switch from pursuing PA to becoming an NP. I personally didn't want to be in a dependent position with a physician for my ability to put food on the table, and I wasn't going to pay a premium to obtain rights to that role. I also didn't want to re certify many times over my career. There were a few more things, but overall, I think you hit close to the mark.
I'm not sure the PA field is in a death spiral, nor facing a crisis of quality instruction, nor are they a ponzi scheme. I think a lot of the push back you got at the PA forums (I recognize you from there) was due to a lot of your fellow PA's chaffing at some hard truth's hitting their pride at what you all had personally accomplished, and doing it all at once. I've seen most of the folks over there complaining regularly about the same things you presented them with. But those are folks that put a lot of time, effort, and money into becoming a dependent provider. They were rightly frustrated by the facts of the profession when compared to NP's. But when I spent time over there, there didn't seem to be any will to do anything about it. Folks were actually getting ticked that there were pre PA's that were wondering what was wrong with the system. Fast forward to now, and there seems to be some appetite for change, but its too late for that. I don't think the folks that felt like you were a troll were jabbing at you for financial reasons, I just think that after the effort they put into their PA degree, they aren't in the mood to hear that there is a way to do the same things as them without being taken to the cleaners. But them screaming "we should have more than NP's because we are better than them" doesn't get them out of all the work it took for NP's to get where they are. For a long time, NP's took hits for not being physician's helpers while PA's reaped rewards for their subservience.
I know its not a perfect comparison, but most professions out there run their own show... physical therapists, optometrists, dentist (with the exception of their own little helpers, hygienists), DO's, NP's, even chiropractors. It was disconcerting to me to imagine entering a profession that was a subset of a more dominant profession. That's a weakness that always gave me pause as I was hoping to become a PA.
In the comic book world, its a bit humiliating to be Robin, because you rely on Batman to give you a ride to where you are going, and you have to use the stuff he provides you. Batman is more than willing to make you wear an outfit that makes you look more like Ronald McDonald than someone to be feared. Whether or not you wear the circus outfit isn't your choice, if you want to work... its Batman's call.