https://techcrunch.com/2023/04/11/elon-musk-says-twitter-will-finally-remove-legacy-checkmarks-on-4-20/

Elon Musk said that Twitter will finally move to remove the legacy blue checkmarks on April 20 or 4/20 because he can’t let go of that joke. This is the “final date,” he said in a tweet. If the move goes through, Twitter will have verification marks only for paid users and businesses, and government entities and officials.

Final date for removing legacy Blue checks is 4/20