I'd try to smooth his feathers, tell him he's welcome to list you as a reference (he probably won't and they probably won't call if he does). 

Different ages , gender , interests , habits  , etc and expect things to go smoothly ?   

FSBO's almost always think their property is worth more than it is, are difficult to schedule showings with, haven't prepared the property to sell, are unwilling to negotiate, and they almost never know the sales process or have the software or the contracts to make the transaction go smoothly and keep the deal from falling apart over little things (very common when there are no agents to act as mediators, buyers and sellers have inherently opposing interests and tend to argue then cancel the deal).

Smooth sailing.

House hacking is such a smooth (for lack of better words) way to get into real estate.  

However, it is important to familiarize yourself with the legal eviction process in your area and follow all required steps to ensure a smooth eviction process.

Or should a surgeon not get paid what they get paid because the procedure only took 2 hours and it went smooth?

Whenever you are buying a property out of state you should do a few things to ensure it's as smooth as possible.Don't buy in the roughest neighborhood in the urban core.

I understand its all verbal until you get to the attorney or something --- I've only transacted in NJ.as mentioned, if you have a super smooth transaction, it looks like the agent didn't do anything. 

To this point everything has gone rather smoothly; however, we recently received news our local insurance brokerage will not take on the risk of thia property.