they think that they should be allowed to phone in to vote for their choice.
Well it wasn't quite a phone-in vote, but it was public opinion that provoked the abdication - because King Edward chose to marry a woman who was unacceptable as Queen. Public opinion is warning Charles that he's headed in a similar direction. The public have accepted Camilla as his wife, but his recently announced intention to have her as Queen rather than Princess Consort is not (at present anyway) acceptable.
I've always found the two princes' choice of the surname "Wales" rather odd but now that Prince William has placed his mother's ring into the public eye its becoming clear that he doesn't consider himself to be a paid up member of the Windsor family. That ring will be right in the face of HRH Prince Charles and Mrs Camilla Windsor at every gathering of the Royal Family for the rest of their lives. Its a pretty potent statement.