LyfeWithDragons
Mother of Dragons...Wait...
It's not going to well because you are not ignoring it successfully. Block them from YouTube, twitter or whatever and you won't see them again. If they do create alternate account though, do the same, soon they will get tired of doing it.
Of course, before doing all of this, warn them first. Inform them that you're creep out or whatever, and if they are still persistent, do the above.
I think he's trying to NOT come off as a complete jerk to a fan who's day is brightened by his videos, and has a disability.
)