It could very well be that they needed to be done.
Indeed it could be that they needed to be done, that's what his dealer is saying. But if it was my Jeep I'd want to look at the pads myself to see that they actually needed replacement and if they did, I'd be questioning why the rears wore out before the fronts. I'd also want to compare the wear on the inner pad against the outer pad and compare them from side to side to evaluate whether or not it's plausible that a caliper is dragging.
But that's just me. Other people may just shrug it off and dig the $$$ out of their wallets and go on their merry way.