No one forces you to read the EU or watch the clone wars cartoon or watch the prequels.
While that's always the case, with Star Wars it's become a bit of a straw man for those of you who like the EU and all that stuff.
It's just so damned pervasive now... it's everywhere. Everything Star Wars is. So if you like SW at all you're exposed to ALL OF IT... at all times. Hence those of us who dislike EU only grow increasingly cynical of it. To ignore the crap you'd pretty much have to ignore SW completely now. And that's kind of the gist of our point.