https://t.me/durov/194
I invite you to dislike the sudden decision to remove usernames, because many usernames are part of a project, and the way they removed millions of usernames without warning may have caused damage to people who kept their usernames safe, I'm sorry but Telegram continues to disappoint its audience, many people are even abandoning entire projects where they spent years to produce them.

Conclusion: I'm sorry to continue living in such an unstable social network, so the next developments I will base them on other interests.