Go check out @geraldroche.bsky.social's review of @sophiasgaler.bsky.social's "How to Kill a Language" for a surgical dissection of the history of language oppression denialism, clear and informed reminders of its political nature, and a buncha links to good research (incl. by @chirila.bsky.social):
Languages are disappearing, and the problem is political
Language loss is often a reluctant choice made to escape violence, not a willing choice made to gain benefits.
theconversation.com