Glad to hear that you got your tk fixed. Sorry, to hear that they called your leak wrong. When you deal with people it happens. Don't down all dealerships cause of one tech.
I run an independent shop with 5 techs. They are human and they make mistakes. Difference is I [myself] can keep an eye on 5 guys and double check most things so this doesn't happen. I use to run dealerships and we would have 25-35 men. A real nightmare to keep track of everyone and every car/tk.
You're right about the change in the timing belt. But, on my cars I still change them at 60K. Have towed to many in with broken belts at 80-90K. The 2.3 is a very easy belt to change and usually change it with the water pump. You're already there and not to change it would be a shame. Many times when the pump starts to leak it will soak down the belt with coolant. It is a pain to clean, but a new belt isn't that much. I'd rather be safe then sorry.
2005 F150 SuperCrew "King Ranch"
1986 LTD II
1964 Corvair Monza