Why do you think this? It's not an art, only an identity. People are generally smart enough to disregard the x's or what have you.
True, people are usually smart enough to address me as Bahh, but one of the reasons I don't like Gamertags with x's surrounding the main text is because they're very unoriginal. I have have 10+ people on my friends list whose Gamertags are like this, and I'm just another person on their friends list who has a similar Gamertag.