the good news in at 91k the timing chain repair was completed.
besides that, the maintenance looks good. you'll still be due for a water pump soon though.
regardless what has been done in the past, there are error codes now. so it really doesnt matter how well maintained it was, unless your willing to go the extra mile to fix the current issues.
honestly, the crankshaft/camshaft correlation code is a very scary one. maybe the timing chain job wasnt done well?
there are about 20 reasons not to buy this car in your first post, but it seems like your looking for the 1 reason to buy it.
EDIT: didnt realize this carfax was for a different truck than the one in the first post. reading comprehension fail.