I've listened to him talk for hours at a time about vaccines and the tone I heard was against no-liability, no-testing, and an excessive schedule.

So what's the change? Can you actually point to any time he's said anything that would make you think he'd call for parents not to give their kids MMR vaccine?

MMR doesn't fit in the overvaccination category because these are diseases that are very transmissible and damaging to kids and so hard to eradicate that they'll be ever present.