There was a time, back near release, when you'd get a swift name change if you had any of these characters in your name. I was surprised when it started becoming common and seemingly allowed to have them. I wonder why they would take so long to do this if they were going to do it. I always found it annoying for myself, but if other people are okay with having those names, I don't care that much. I assume that this would also be slightly problematic in some European countries.