I wouldn't ban anyone from watching RL; I just wish they'd bog off and embarrass another sport instead.
I wouldn't have thought that calling for the World Cup to be shown on French television is embarrassing our sport, unless there's something I'm missing.
Part of growing up is that you realise that some people you may dislike will share some of your enthusiasms, while some people you would otherwise get on with have no truck with your hobbies and pastimes.
For example, I was listening to Mark Lawson's Front Row programme on Radio 4 last night, and he was saying he doesn't like Wagner because Hitler and the Nazis liked his music. Lawson is entitled to his view, but if we are going to check all our fellow enthusiasts' credentials before deciding whether to indulge our favourite sport or music or any other pastime, then we'll soon feel very lonely.
And we would actually be handing a great deal of power to these people we don't like, Nick Griffin et al.
If Marion Le Pen, who I'd never heard of before seeing this thread, wants to persuade French TV channels to broadcast World Cup games, I hope she succeeds. And, as far as I'm concerned, she can even turn up to cheer on the French team without asking for permission from me or anyone else on this forum.