Tinder user, 69, who identifies as a 49-year-old asks court to change his age

I'd say he's well-known because of various stunts, most of them long ago, but not 'big'. More Weird Al if he retired a decade ago than Kanye.

It's not just about Tinder. In the article it says he wants to avoid general discrimination he faces based on that 20 year difference in age. For example, he wants to work again, but no one wants to hire someone at retirement age.

This is still pretty silly, but because there are cases where people change other facts of their birth like their names or gender, you could say there's a precedent.