[goodside]

"Low-resource language" isn't just a euphemism for "language almost nobody speaks". There are many languages that are widely spoken but nonetheless are hard to obtain training data for. Getting something like Wikipedia going for a minority language can be a difficult chicken-and-egg problem because users will use English for its completeness/recency, despite their limited fluency, and the native-language Wikipedia remains neglected. So you can end up in a situation where users use one language for social media and another for news/research, and Facebook is in a unique position to care about the former.