All companies have needs that engineers tend to be very poor at, and if the engineers are dominant and see the other members of the organization as parasites, that's a serious dysfunction and not by any means "normal".
I'm not sure there is anything really special with engineers in this situation. It seems like one of many varieties of the same problem with telling who is producing value and who is faking the appearance of producing value.
I have this play out repeatedly in my personal life. I've found I have to simply let people do the wrong things or fail a little bit and gently guide solutions. Otherwise there will be emotional pushback that entrenches their position.
That's getting someone to change their mind 101. Not an engineer exclusive insight. I think a lot of "oh engineers are so rational that's why people think we're so rude" is just post hoc rationalization for poor social skills.
Anyway. Shoes on the other foot at SE.
What surprises me about SE is that it has all these smart people and a big community but it has let google and the parasites scrape it to death.