A lot of criteria front load the discussion, by narrowing "teacher" to exclude (not count) peer teachers on Youtube, corporate trainers, military trainers, all manner of apprenticeship, and of course with a lens tightly focused on K-12, biased towards NEA members or whatever.
I'd like to remind the adults in those buildings that they have no monopoly over that word ("teacher"). I too am a teacher, paid to teach, with students, and yet I am likely not included in these statistical studies, because of the narrowing that's gone on in making the results.
Which is why I think it's OK to tune out a lot of these salary-and-benefit-minded threads; they're not about teaching and learning, but about their specific economic circumstances in a particular civilization, a kind of dumb one, but one that loves to talk about itself.
If we take a more STEM point of view, lets realize that much may change on the ground, in terms of what a "school" is, and there's no reason to assume the status quo has much staying power. It may, but lets not just assume yakking about NEA business is the talk of the town. DC maybe, but that's just another city with pretensions to imperial power (a concentration of severely deluded individuals if you ask me).