It's absolutely intuitive, especially if you're coming from the previous model. If you treat the new clickpad like the old touchpad, navigation is identical other than the loss of fast scrolling by sliding your thumb up and down just the side of the pad, which never worked for me anyway so no loss here. You can navigate by swiping your thumb or by physically clicking like a D pad.
As far as scrubbing goes, the issue is people are suffering a bit of cognitive dissonance, as they were expecting it to function like the old iPod clickwheel, ie you continue to move forward or back by continually rotating your thumb over the wheel clockwise or counter-clockwise, when in reality the function works more like the jog dial on older devices and editing bays in which you spin the wheel varying amounts up to 90 degrees one way or the other to achieve the desired direction and speed. I blame Apple advertising on this issue, frankly, because after they likened it to the old ClickWheel people naturally assumed it would of course work the same.
The only hiccup for me is constantly hitting mute when I mean to press Play/Pause, as that is where it was on the old remote. I'm getting used to the new arrangement though and in another couple days it won't be an issue.