A tiny niche that’s only accessible to people who know how the internet works. Ask your regular Joe if they’ve even ever heard of the Fediverse. Kids will flock to the easiest accesibke and largest platforms. Not Lemmy. And even Lemmy would be toxic for kids.

The internet is firmly in the grasp of mega corporations. There is no free internet anymore. This shit needs to be regulated.

Why not Anki? Ankidroid works well and there are many great community decks for all kinds of languages (and other topics too BTW).