The code is GPL, not the name.

How many forks do you know which have the same name as the original.

Imagine the confusion if Firefox is compatible with some feature but Firefox and Firefox aren’t.

Imagine who gets angry emails if the MacOS port does any damage and people google for the author of Notepad++

Just look what the author of curl get because people found curl somewhere and googled his name or found it in the source

https://daniel.haxx.se/email/toc.html