Hmm..
how?
Uh if you play on a pc here's a tutorial go to your appdata folder and find Bfns ue folder go on saves click on your save file when it asks you for which app click on notepad there is a section called player name where you can get names like this.
You can also give yourself items and other stuff
True but each item has it's ID
U can do same on mobile, get in game folder and find game's save file, dats how i got 99999999999 bucks
Yes, that’s error edition.
What
it's just a funny thing that you can cheat