Well, I should have qualified my statement: Anki is inefficient compared to better methods, but more efficient than haphazardly trying to memorize things. Yes, it's better than nothing, but there are better SRS implementations, including most readers.

I saw a lot of this from personal experience. I had to learn not only Latin and Greek, but also French and German just for my doctorate, and I learned Russian, Thai, and Swedish separately. And then I taught Latin and Greek for years, inquiring often how my students were learning. Anki (vel sim.) is fine, but there are better ways (and none of those ways start with the letter D and end with the letters lingo).