Seem a coolant flush at 60k miles is no indicator of when a water pump might fail. I am at 88k miles on an 08 on original coolant, and the water pump could go out tomorrow or at 200K miles, or never like MACT.
From a risk reward perspective, a car that can turn to salvage value overnight with an engine replacement is something that folks may not sleep well at night, as more become aware of this issue. Makes the PTU risk appear more negligible.