Honestly, I'm not sure I'm a particularly good person to ask about this. I've experimented with Anki for areas other than test taking and language learning, but it didn't stick.

I used it for some geography stuff, and that was fine I suppose, I like geography, but I stopped after a while.

I find it easy to remember things if I care about them. Ergo, if I care enough to put it in Anki, Anki is useless.

Particularly with LLMs being a thing, you don't even need to concretely know what you're looking for - just give chatgpt a vague description and let it list out suggestions until it jogs your memory.

When it comes to physics etc, you'll end up memorising everything relevant to the areas you actually use. In areas like "What is the star type of a star with a temperature of 6000K" - something that I memorised using Anki, and which took me a while - if I actually worked in that area of astrophysics I'd obviously learn that quite quickly.

I suppose it could be useful for maintaining knowledge. Had I not been burnt out I would have kept up my flashcards through my gap year, which would've presumably been quite useful - I'm currently going through the slog of relearning how to integrate so I'm not totally embarrassed at uni!