If you compare yourself with others,
you may become vain and bitter;

That's a quote from Desiderata by Max Ehrmann.

I do agree with you that engineers and other professions you mentioned are paid less (statistically) in our country. BUT i don't think we have to compare ourselves with one another the mentality i guess somehow maybe that is leaning towards an awful "crab mentality"

Instead, we can argue this way

I am an engineer, the value of my craft deserves this X amount of salary or gratitude. I work hard too and value my own time.

Let's argue positively and maybe we can achieve things easily this way, rather than being supremacist and instigating the government for oppression.