This seems like a really good idea, and I love that the article actually acknowledges that there are other countries in world which sometimes have good examples of how to do various things. Virtually every neighborhood should have reasonably quick/nearby access to a decent grocery store.
Kbin and Lemmy etc should simply allow options for preferred languages, and people can select whatever they prefer. Giving them the option to not see posts or see translated posts should work out fine. I bet this problem get resolved eventually. In the meantime, I’m not too bothered by blocking magazines/communities that are non-english. No biggie.