Just speaking from personal experience but the struggle is what creates the learning.

I learned refactoring patterns from Fowler's book. But when I tried to actually use them I still struggled. I didn't fully understand how the patterns worked until I actually tried (and failed) to use them a few times.

You don't really internalize things until you understand what doesn't work just as much as what does. You don't learn nearly as much from success as you do from failure. I would say the ratio of truly internalized knowledge is much higher for failure.

The notion that you can get a bot to just vomit out a vector database and then you can just "read the code" and you'll understand how a vector database works is just ludicrous.