This pretty much. It's very hard to forgot theory, especially if it was hard-learned with lots of practice. But enough time spent away from the doing, and the details starts to blur and the only things is the intuition behind those things and a general sense of how it's done.

But with computer programs, the devils is in those details, so even if you're a senior designing the whole service, you either have someone on staff that's responsible for the implementation gotchas or you have to got familiar with them.

AI does not hold itself accountable for anything.