No. As a med student who uses Anki for basically everything, this is plain wrong. The time spent on making cards is better spent on studying. Premade cards (Anking in this case) have relevant pages from multiple sources, relevant histology/gross photos and additional notes for every card, and all cards are tagged with their corresponding chapters in multiple textbooks. If I spent time trying to do something similar (and even without the tags) I'd have no time left to actually study.
The only use case I can think of where making cards yourself would be better is sentence mining while learning a language, because these cards depend on context and creation doesn't take more than a few seconds even when adding images.
The only use case I can think of where making cards yourself would be better is sentence mining while learning a language, because these cards depend on context and creation doesn't take more than a few seconds even when adding images.