As someone with an undergraduate degree in engineering and some professional experience as an engineer, I would counter that the training of engineers absolutely does deprioritize the kind of high level critical thinking I'm talking about. I'm not saying every engineer needs to be an ethics and politics scholar, but there is definitely room for improvement.
Nuance in communication and dealing intelligently with ambiguity is also a really big issue in all of STEM. Engineering is no exception. This is in fact something that COULD be improved. It's just not as profitable.
Ethics and political are technically peripheral to critical thinking.
One can be an unethical bastard and have the critical thinking to realize something is unsustainable or a scam or be a saint and taken in by utter bullshit (although the bullshit may persuade them to do horrible things believing themselves right).
Engineering deals with nuance certainly - although it is often a more pedantic technical form like say the difference between the stength of wood and steel vs temperature. Steel doesn't readily combust like wood but wood while it chars and burns doesn't weaken like hot steel. You don't need to melt steel beams to collapse a skyscrapper.
Engineering definitely doesn't deprive students and practitioners of critical thinking. Other disciplines? Maybe. I can't speak to that.