I think you're overstating it, I know plenty of Blues who think Rafael is a good manager and would be prepared to move on. On the other hand I know plenty who don't consider him to be a good manager, but would still be prepared to accept him and try to move on (I include myself in this category). There is obviously a core who will be strongly opposed, but I don't see a 'major rupture'.
The main issue for me is not Rafael but how the club is run, many years ago we were admired for our solid governance and sensible approach, much in the way Arsenal were under Dein, those days seem a distant memory now and for me personally that is the point of disconnect. I'm losing interest because of how I perceive the club, Rafael, Fat Sam, Carlo, none of that really matters for me in the context of what is going on behind the scenes, I just don't 'get' Everton these days.