I've had that experience: the logins that get automatically assigned at the Big Enterprise Company where I work, are sometimes nonsensical. I've seen some coworkers with just surname@example.com, but many more with an arbitrary combination of their given name and surname. The hash they made of my legal name was to my eyes ugly, and it didn't help that it's difficult to speak. I also have a lot of coworkers whose backgrounds are in Asia or the Indian subcontinent, and I can't imagine they're happier about their names getting mangled.