Re: I think I'm feeling burnout or worse. I am seriously considering walking away.
I wouldn't like getting smacked in the face if I was just learning. But I guess, if you're a yudansha and still have no idea how to attack properly (as per your teacher's method), then MAYBE your teacher can wake you up. But in the end, you'd have to judge whether it was malicious, or just that the teacher thought that a tactile approach would be better than repeating ad nauseaum.
I don't know the context of your dojo's approach, and I certainly don't have the world experience of PAG to make my own reasoning, but have you even talked to your sensei about your concerns? Sometimes, misinterpretation and miscommunication leads you down invalid assumptions.