I'm not sure those examples mean what you say – e.g. teachers are allegedly important but get paid far less than your other two examples, have increasingly regimented working conditions and are popularly blamed for circumstances outside of their control. In contrast, it's far less common for anyone to e.g. go after first responders’ pay or benefits or talk about how public safety depends on breaking their union.

Unsurprisingly, that respect gradient also tracks closely which jobs are stereotypically female-dominated. Even staying in education, school administrators - historically male – get more respect for comparable levels of education and are paid more for doing less work.

Again, the point is simply that our talk isn't backed up by our actions.