This isn't just an issue for celebrities. Celebrities feel special and think they deserve the right to their name more than other people. But what if your name is John Smith and there are thousands of Johns Smiths... You have no right to<a class="mention" href="/@JohnSmith">@JohnSmith</a> over any other person out there. The real solution is to not have user defined IDs but instead just a number for your id, and you can pick whatever display name you want.
This isn't just an issue for celebrities. Celebrities feel special and think they deserve the right to their name more than other people. But what if your name is John Smith and there are thousands of Johns Smiths... You have no right to<a class="mention" href="/@JohnSmith">@JohnSmith</a> over any other person out there. The real solution is to not have user defined IDs but instead just a number for your id, and you can pick whatever display name you want.