I prefer not having downvotes enabled here. Instead of just downvoting your suggestion, I’m having to actually think about why and put it into words and contribute to the discussion. 😉
Downvoting usually impacts marginalized people far more than “idiots”. (Side note: this sort of casual ableism against people with mental disabilities is extremely common, but we can strive to do better.)
A “gotcha” I just discovered: even though the selector uses radio buttons (which usually means you can only choose one), this is a multi-select list. So if you don’t also choose English (and/or other languages you understand), you’ll miss content that does have a language tag.
Designing UI ain’t easy.