What makes it morally wrong?
If you are an RFL member club and denied your place in it even when finishing the Champions of the league below then morally it is wrong.
And how come your morals change (you know, through refusing to watch SL) if your club manages to get into SL?
I don't mind people's opinions or stances, but if they're going to be so vociferous about them without being able to back them up with logic and facts then it's nothing more than negative moaning stubborn whingy attention seekers sticking their tongues out with their fingers in their ears singing lalalala because they haven't got what they want. Basically, something bratty little children do, not mature and rational adults.
If you can't back it up, don't shout about it.