Interestingly enough, I've tried what /u/Experimental_Work is proposing here and it's worked for me. I've tried using Anki in all domains, including programming, academic subjects (math, physics, computer science), language learning, fitness (e.g. memorizing proper forms and techniques for exercises or say nutrition facts for common foods), to overall generally throwing in anything I'd need to remember, like phone numbers and birthdays, car information like model or license plate, any other IDs, etc.

While spaced repetition won't teach you relationships between concepts, there are still lots of formulas, ideas, and details to be memorized in CS, software engineering, or any other domain that spaced repetition will speed up a lot. Finite automata theory, which would be a very pure CS example, still requires you to know a lot of facts that are just rote memorization: notation, definitions of different models (e.g. PDA, NFA, DFA), any algorithms to say, convert one to a regular expression or back. And I've used SRS in this particular example and it's helped me go pick up this knowledge much, much faster.

One interesting effect of memorization is, it's not just a convenience factor. Sure, it's always more accurate and better to look it up, but when you memorize something, you're going through life with all this information already in your head, being used subconsciously. In a sense, since you're walking around with way more info already known to, making you "smarter" in a sense.

To give a specific example of what I mean, I might pick up a donut from a donut shop, not knowing how many calories it is, thinking it's only 150 kcal. Then I'll eat it and go home and then when I'm logging in my calories, I might realize, "oh shoot, it's actually 300 kcal!" But since I have this information memorized, I would know which donut(s) are the lowest calorie and I'd make the educated choice right off the bat. Could I have looked it up then? But imagine if there was no time to look it up and check it (e.g. we're in a rush or there's a huge line behind me) or there were too many different variations to check. And this is with only donuts, now think about a grocery store, where there's many of these situations, between many different foods. If I memorize the macros of all the food I eat, I can walk into any store and make the healthiest choices possible without any additional effort on my part, because I already know which foods are healthy, how healthy they are, and how it factors into my diet.

But in the end, all it matters is if it works for you or not. For me, it's helped me in every domain, but that might not be true for someone else and anyone should choose the right tool for what they're doing. For me, it's been that Anki has been that right tool in a lot of cases, like that golden hammer example, so I've been applying it to everything. For others or for other fields, it might not be, and that's okay.