I'm guessing most of the 'rugby is shybo' lot haven't watched a game for years.
Football fans can come across really ignorant dismissing all other sports like many tend to. I love football, but rugby can be amazing, as can boxing, cricket, and others. I get the same feelings from some of those as I do from football, even though probably slightly less intensely. I'd be missing out big time if I wasn't invested in them and get all those highs/lows that we get from football from them as well.
Not to be condescending but rugby union does take some getting to grips with, but it really can be outstanding. It's worth the effort. That said, a bad game of union is horrendous, but still, worth it for the good ones. If you really know what's happening it's the highest intensity sport going (maybe behind an on the edge boxing match). Not more nerve wracking than Wednesday on penalties in play-off final obviously...
I'd take the rugby this week. Cricket and Rugby world cup double in a year, that's pretty special.
As for the posh boy stuff, that's pretty outdated. Obviously still is a factor, but much much less so, and most of this England team are from working class backgrounds and 'normal' schools.