I feel this.

I went to a private university to learn gamedev. And I feel like I learned game but not dev. Yes I slung a lot of code but, when the game industry dried up and I applied for a bunch of developer positions, I kept finding terms I had never heard of. Basically any methodology other than compile and fix was completely absent from my skillset. What I had learned, I had discovered while helping mates in other disciplines with their coding assignments. And the learnings I had were completely transitory. Tricking DirectX 9 into compiling was actually quite different even from DX8 or DX10/11.

I think this kind of thing is endemic, and its not just a youtube video problem. I guess you could see private education as kind of the same beast as self education.

That said, it did give me troubleshooting skills, because effectively we were taught break fix to such a spectacular level, especially in netcode, that my skills were very easily transferable. Didn't come back to code for ages.