I agree football's certainly gone soft in terms of the wimping around, faking injuries and diving etc..
However the behaviour towards refs and linesmen is worse now than I can ever remember it. I'd be embarassed if my four-year old threw tantrums like players (and some managers) do nowadays.
There is absolutely no justification for it and it diminishes the game enormously. The ref isn't going to get everything right. My honest take on it is that the grown-up approach is to man up and get on with it, rather than bleating over every decision. In most sports, not just rugby, that's how it works; for some reason though we've come to believe that footballers are entitled to cheat or behave like someone's taken away their lollipop every time it doesn't go their way. Rugby's not perfect, but there's plenty that could be learnt from it. One thing it's not, at least on the pitch, is sanitised!