> SRS shines when it comes to memorizing decontextualized, atomic information (e.g. countries and capitals, the periodic table of elements or writing Japanese kanji), but not for learning a language in general.
I have acquired >3,000 words from daily anki usage in Korean. Not only is it possible, it's the only way for me because inputting words into anki (or any SRS system) takes so long.
I interleave two decks: a premade sorted one with 5.8k words, and my personal deck that I occasionally add to.
The issue is that later on, you start delving into ambiguous territory for words. I've found that it's impossible if you maintain a (word in your native language) frontside and (target language word) on the backside.
Now I am slowly migrating to having the definition of the word in Korean on the front, and the target word on the back. I'm sure this won't be perfect, but it's better than having one english word potentially map to many korean words.
Using anki has bolstered my Korean learning because, well, I can recognize more words when I read or watch native material! Previously it was impossible for me to read the news because I had to look up every. single. word. Now it's more like 65-80%, which makes it much more tolerable.
In an ideal world one would learn a word, then put it into anki, but it's simple math. ~1 min per word (very generous) is only 60 words per hour. I usually fluctuate between 1-2 minutes because I have to check 2 dictionaries to make sure it's accurate, then add other data like grammatical type, and so forth. It may be easier for a language that lacks chinese characters, but I have to make 3 dictionary searches to add one card. So I only rarely add anki cards now... I have notebooks filled with lists and lists of words that I wrote down from seeing it in native material, that I just don't have time to manually add into anki.
If I were -only- studying Korean, then I could muster ~2-4 hours a week or so to add anki cards. But I have work, and life, and other hobbies, etc. Any time spent not adding cards, is more time for me to study my other decks, etc.