How do people like that ascend to CTO?

CTO is in many cases a rank more than a role, and given out accordingly. You should never take someone seriously based on their rank alone, much less a CTO.

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pbowyer 3 hours ago | parent | prev [-]

The Peter Principle: https://en.wikipedia.org/wiki/Peter_principle

	▲	philpem 40 minutes ago \| parent [-]
		Or more cynically they reach their level of competence, go one level further and stay there to keep them from ruining the productivity of the people doing the work...