If my username causes a pop up in a piece of software, that software has a major vulnerability, and bad actors have likely already exploited it to run their own JavaScript on that software’s users’ machines. If you see such a pop up, report a severe XSS to the software’s authors ASAP.
I wrote my name this way as a joke, but it’s also dead serious. My jokey username didn’t create the bug. It just highlighted a major bug that already existed, and someone else may have already compromised you.