People have those things in spectrums, not all or nothing. You have to have at least some of all of them, but I’d argue that mediocre competency with really good communication and accountability is a better combination that really good competency with one of the others being mediocre.
I think we might be agreeing, it’s just that “mediocre” means different things to each of us. My team supports human spaceflight, and no one we have is crummy. The “mediocre” people have pretty decent technical skills if you’re looking across all software development domains.
Personally, I’ve found the decent technical skills to be easier to come by than the other ones, and having all of them in one package is a real discriminator.