Earlier quoted context omitted.
I studied German for 3 years in university, dabbled in German duo-lingo, and completed all German courses on Memrise. I don't see how one can learn German fluently using Duolingo (or even Memrise, which I think is much better). It's great for vocabulary, but I think understanding the grammar requires understanding the theory which I didn't see when I used these applications.
Agreed. Even Seedlang was of limited use to me past a certain point, I just think it did a much better job at the same niche as Duolingo. For me as someone who has never taken actual German courses, the biggest thing that contributed to my fluency was just listening to podcasts in German non-stop. Didn't matter if I wasn't understanding anything for months and months at the start. I think the listening played a huge…
You're level may be basic and not super fluent, but if you can make yourself understood you can have a conversation. But if your listening comprehension is not good enough and the person is not slowing down (or if it's multiple native speakers speaking at a natural cadence) then you're lost.