I think you can not so easily decouple "technical" and "social" humility. Dijkstra's advice/definition of humility was that we should be aware of our own limit

I think you can not so easily decouple "technical" and "social" humility. Dijkstra's advice/definition of humility was that we should be aware of our own limitations when programming. That is both a "technical" as well as "social" construct, for example to be aware of your own technical limitations is incompatible with saying "I am the best programmer in the world", or "I understand the most complex code", because it demonstrates an unawareness of your technical limitations IMO. However, my observation was largely a unrelated anecdote on the wording and not a critique of the author or the message.