Your competencies might be real and correctly-assessed, but from your description, you sound like you might be difficult to work with. I don't mean to extrapol

Your competencies might be real and correctly-assessed, but from your description, you sound like you might be difficult to work with. I don't mean to extrapolate from Internet-rant to presumed-reality, but this is a common pattern, so maybe it's worth mentioning: I can teach a person Prolog. Any reasonable developer can teach themselves Prolog. I cannot teach a person, nor have I ever witnessed a person self-educate on a short (employer-relevant) timescale, the willingness and propensity to work cooperatively and constructively, if it is not in their nature at interview-time. Sometimes the latter is much more important than the former. Negativity is infectious, and people naturally steer clear.