My problem with Anki is that it's very, very inefficient. It will take much more time and effort to memorize the vocabulary words you learn, and losing those words is very quick. It's much better to use SRS with actual and varied sentences.
You know you can just…create Anki cards with sentences, right?
Anki doesn’t force you to make cards with vocab words in isolation.
I have the exact opposite experience with Anki. I use it to memorize vocabulary of a language I'm learning, a language completely different to other languages I know, and my retention before and after I started using Anki is night and day. Frankly, I was floored once I realized how much faster I was learning, and how easily I can recall even words I last practiced or used months ago.
I make and maintain my own cards/notes, which I think is part of why it works so well - it's tailored to my learning, not to someone else's.