So what's the pay scale on "societally meaningful" engineering jobs, because if it's not the same (and quite likely it isn't) we'll just be back to the whole "but it's not equal pay" argument.
The fact is that many "better feeling" jobs tend to come at a cost in regards to monetary compensation.
So if Marshall Eriksen is going to work at a soulless lawyer firm as a shark for hire, he's going to make more money.
But if Marshall Eriksen is going to work in the legal department of an environmental protection company, the pay may not be quite as good.
Similarly, if Jane Doe wants to work at a firm that does the engineering for creating oil rigs, good pay. But if she's building aquifers in Africa or something similar, the pay might be good but not "as good".
But... I bet a lot of comparisons will say "look at how Jane Doe, is making less money as an engineer (at eco-engineering inc) than John Smith, also an engineer (at drill-baby-driill inc)"