Having your timing belt fail in an interference engine can cause major damage to components. Having that gear driven eliminates that risk.
The comment about water to air Intercoolers being unnecessary obviously didn’t take into consideration the massively decreased length of charged air intake pipe, and more specifically how that affects boost lag. It seems a need to provide commentary although not from a real world experience or informed source.
One of the biggest gains for me with the 6BT is idling down creek beds or trails, at idle it uses so much less, especially compared to carb’d mini trucks, it’s unreal.
Having the Manual trans actually does give me better control or consistency with speeds idling over obstacles as compared to the auto that was in it. But I’d rather have an auto for steep climbs