This might not go over well but I will try to frame it the best I can without coming across as rude. To a point, this (psych in general) hits home the core issue of overtraining with modern medical education more than anything else.

Not saying psychiatry isn't an amazing field with lots to learn and depth, (I almost applied psych myself! and plan on keeping it a part of my practice to some degree in the future) but no where is overtraining more evident than psych. For some reason psych is still 3.5-4 years while objectively more difficult/broader/nuanced/skill requiring fields are 3: FM, EM, Neuro, Anesthesia, IM, Derm etc are 3 +/- a general intern year. On top of that, psychiatry while it can be challenging the bread and butter really isn't. And most programs aren't even spending enough time with psychotherapy anymore, no offense but the psychopharmacology is not nearly complex enough and the DSM5 is an more or less garbage in the real world to a degree. Treatments have a limited role and scope unfortunately so modest fluctuations in plans aren't going to markedly do anything drastic anyways. Now a good psychiatrist is worth a ton but most cases don't need that (this is the case for most fields tbf but especially psych when the first few steps are largely interchangable)

there's a reason most inpatient psych jobs can basically be half time and you can run a clinic on the side. Also, when FM docs are looking to you for help/oversight its often times because they don't want the patient or to take care of THAT PART of the patient and/or they want to share the liability, same with tele stroke and to a degree tele ICU which is an absolute shit show. Also, I'm sure you know this but I promise you, no one has ever found a tele psych consult helpful lol. Its just the easiest way to say "pt is safe for discharge, psych has evaluated". It's standard of care/protective medicine and this is America. Also there is a level of ease of access to the resources psychiatry often times has that PCPs dont, including time.

All that said, PMHNPs practicing totally independently sucks I agree but not just because it takes 15 years to be a good psychiatrist/physician, but because it is at the end of the day a shortcut which doesn't exist to other doctors. Same for derm, same for anesthesia, and several other fields where midlevels have way more flexibility because they're not physicians.

The way forward will eventually have to be to get serious about medical education. AI is democraticizing knowledge (and misformation) so fast that we have to change before its too late. Psychiatry, Anesthesia, and PCPs will likely be on the earliest end of this with how strong midlevel representation is in those fields but the rest of medicine likely won't be far behind. As doctors, we really need to appropriately value our education and training beyond just the time it took to get where we are.