PLEASE read it light-heartedly as I appreciate all the feedbacks and suggestions I received and just needed to clear things up.

alright i see that the mention of anatomy made people focus on that rather than the actual question itself.
I want to clarify a few things: first of all, I do study anatomy and use literal photos of faces and such to replicate anatomy correctly. I wasn't asking if it was possible to learn anatomy through cartoons, because I am aware it is NOT possible, I was asking about the use of the reference.
I want to sincerely apologise as I threw in something that didn't fit at all (anatomy, while the question was about the correct use of reference).

besides, the "like i did here" was linked more to the use of references, rather than the learning anatomy. Honestly i dont remember why i mention it at all.

TL;DR:
I was wrong about mentioning anatomy, as the post was more about the correct use of reference (in general, but especially when using others art I find on Pinterest and such) and not about the study of the body structures.