I will explain, even though I really don't feel I have to. My experience is that people who do not give their name are a billion times more likely to become a problem. Since the registration notes you quote were written, events have caused us to ask for real names as a compulsory part of the registration process specific to CBF. This doesn't mean you are or will be a problem, it means that we get a far smoother life here when everyone gives their names, and that is why the two name fields are required, and why you had to enter xx in each.
Now please accept that we have been here for a long time and don't ask for a fiver a month, we just ask for people to respect each other and give their real names.
If you have nothing to hide it won't be a problem to add your real name, will it?