WTAF? I don't like the way DuoLingo works anyway, I use other language apps, but this is just batshit! Why do I need to know how to say "leather trousers" and "whips" abroad?! I'm going on holiday not retraining as a late 19th century cowboy!
And why would I want/need to express someone else's opinion on JKR, when I wouldn't have the necessary vocab to actually discuss the topic, given that I'd bet money GC, TRA, the UK EA2010, single sex spaces, and Supreme Court Ruling are not in the approved vocabulary list.