Not at all. I was easily successful enough to have continued in the non-technical side, but chose not to. And you should have seen what the marketing team were coming up with back then - we recreated one of their PPT slide backgrounds with the remains of a Thai meal one boozy team night out.
Plenty of techies can (and do) do it all. The opposite - not so much.
SUre. You've made it a point (twice now) to point out that you were able to be successful in non-tech roles but decided instead to go back into a tech role. You've pointed out that non-tech people weren't likely able to do the same, going so far as to put down the work of some colleagues who were non-tech by saying that a food menu was easily used as a substitute for their work.
I'm not sure how you don't recognize that that is EXACTLY the point being made: tech people think that the work of non-tech people is less important, less critical, and more easily done then their work. And that their work is special in that non-tech people are not capable of taking up a role at a keyboard and doing a good job.
I'm having a difficult time understanding how your statements can be interpreted any other way.
Plenty of techies can (and do) do it all. The opposite - not so much.