I don’t know. It jarred me, too, there for a minute, and I claim dibs as his biggest fan.
That's why I think it's smart to say it NOW and often. By pounding it in now, it gives people the time to get used to the idea and say, "Yeah, he's right. Now what are we gonna do about it"?
When he wrote his book "Fed Up", he hadn't planned on running for President so he can't run away from anything he's said in the book. The more something is said, the less shocking it sounds.