Yes; a lot of tech (and other subjects, but especially tech) education is sadly low-quality, being either way too surface-level (learn to make a Twitter clone in 20 minutes by coping & pasting) or far too arcane and assuming a lot of prior knowledge.

I think we're making progress though - we know how to be more effective, but it's a slow process to get there. Mastery of a subject does not necessarily include mastery of how to effectively teach it, and we need to start treating the 'education' bit of 'tech education' as an important and separate element requiring expertise.