As an engineer, I'm an extrovert around other nerds (of various stripes) and an introvert around others. I mean what are we going to talk about? How you took 8 hours to make a PowerPoint for your new ad slogan? Politics? Gross. Better to stay in my own head at that point.
engineers haveing low charisma is the reason why the technical writer job exists(a realistic way to use a language/writing degree, but requires some basic technical knowledge), and part of the the reason why engineering textbooks not directly written by the engineer at times have errors (as the technical writer may have grasped some statement wrong, and would usually not be aware if some information was a mistake or not)
I thought it sounded a bit familiar, but I couldn't place it. It's probably not a unique thought for anyone who has interacted with engineers or any smart people who are also on the spectrum.