I don't have a dog in this fight and have zero experience with
@Eric Sarjeant , however before everyone pig piles on Eric this may be the case where the dealership has made the decision rather than how Eric wanted things to play out. There is still much OG in the car dealer world. While the right thing might be to own the success of the build, the dealer (not Eric per se) might choose to react otherwise if the build is bleeding money. The shop is a different department than sales and they're probably not a true partner in the risk. So every time the vehicle comes back, they just charge sales like any other customer all the while they have no clean playbook or leadership in house of how to correctly remedy. Reminds me of the time I took my 2000 into Beaverton Toyota to diagnose a driveline vibration and $150 later the recommendation was to install OEM tires. At the end of the day they're just not aligned with the aftermarket world.
As I read this, the lesson to us all seems to be the high value of the reputable independent 4wd shops. While a turn-key brand new vehicle package may seem enticing, this tale seems to show how valuable craftsmanship and skilled tradesman are when doing a custom build. Toyota techs don't necessarily have the required mindset or experience with custom aftermarket fitments. And while subbing it out to 4WP may solve the liability issue it didn't solve the quality issue.
Which is why I'd rather build than buy...