I feel like people constantly shit on Duolingo and other things like it, especially compared to other forms of language study like full classes, immersing yourself in that language via cultural exports (movies, TV shows, books, etc.), or interacting with people that speak that language.
But I think that's kinda missing the point — Duo and other programs structured like it offer a way to learn a decent chunk of a language without a lot of effort. If you put in a bit of time every day or so and take things at least a little seriously, my understanding is that you can learn a lot. Maybe you won't be truly fluent, and certainly you won't learn as much as you would with intensive self-structured learning or classes at a university, but it takes way less effort and is far more approachable.
That being said, definitely look somewhere else now that Duolingo is using AI.
Yeah man, I love Windmill Slice Can Goose too! That album has such an original sound to it — honestly almost brought me to my knees the first time I heard it.