3 Engine failures in less than 2500 miles - no lie, just bad luck. Bad luck can happen frequently to some people, it definitely happened to this man.
Would the MWR filter have stopped the failures? I know one it wouldn't have, the other 2 it may have by eliminating a lot of the imbalance of power from one cylinder to the next.
Seriously I welcome you to ask any engine builder if he thinks a V twin with a 9% power differential between cylinders is going to be more reliable than one with a 3 or 4 % differential.
After you get the answer that the rest of us already know, ask him what problems a 90 degree V twin with a 9% power differential might experience.
Trust me I'm not saying this is some sort of miracle cure or that you'll never have a problem in a bike with it installed. I'm simply saying you gain power AND add reliability.