Agreed. I'm applauding, actually.
Frank discussion with parents whose opinion we trust has really opened our eyes there-- because the teacher that my DD had the MOST trouble with in terms of communication/expectations is someone that both of her HG boys have loved dearly.
On the other hand, the teacher that my DD lovingly calls "The Barracuda" and is seriously attached to...
their boys dread and avoid. We like them as a family, our kids are good friends, and really, they are just different in many ways as learners. The family even has quite similar values. We often have EXACTLY the same complaints about curriculum matters (which teachers don't control).
Some of it is truly the parent and student and how that meshes with the individual teacher's style.
Oh-- but the horrific biology teacher? Yeah-- they were appalled by her, too. So there are teachers that are really toxic for an entire group of learners (in this case, highly capable ones), but mostly this kind of thing is explained by interpersonal differences in style, flexibility, and expectations.