Either by text, eg a tweet, or in a video or audio interview

Gotta be verified, and has to happen in a public forum, not deleted or walked back for 24 hours, by end June 30 2025

Got to be a clear statement like "I don't agree with this policy" or saying it's dumb or it's why he left. Oor, a meme post or similar which clearly suggests he doesn't agree with that plan.