At least part of the reason for the hate probably has to do with the way Uconn wins, especially in the Final Four. Lockdown defense frustrates the hell out of the fans of the prima donna schools, particularly when it's their team that is getting locked down. They call the games ugly and poorly played, and the announcers make excuses like "Well, Florida picked the worst time to have their worst offensive game of the year", or "I guess Kentucky's freshmen finally had their inexperience come back to bite them", blah blah blah. Never mind that this Uconn team did everything they wanted to do offensively in this tournament against the biggest and baddest teams in the country. They can't deal with the fact that we're just better, on both sides of the floor.
As a Giants fan, it feels exactly like the Super Bowl runs in the late 80s/early 90s, when they'd beat down the Niners, Bills, etc., in low scoring games, and everyone would cry about it.