Just as a student perspective...it does matter though. Consider that someone who has LT. X who is a scrooge, for an onwing will have at least 7 flights during contacts and 6 or so during RI's (X-country) and it begins to matter. 14 events is better than a third of your flights...and if the person giving those grades doesn't correspond with a squadron average, then when it comes time to get an NSS, that person is getting short-changed or preferenced.
It might matter to "you," but in the grand scheme of things, it "averages" out. I get what you mean, and it potentially can effect an individual, but the system doesn't care about "you."

For every scrooge, there's a Santa Claus. Also, not everyone gets to fly consistently. That's not "fair," either. Guess what, such is life. Lastly, again, a scrouge will "hinder" your grades a bit, but in the end, if you meet MIF (which, once again, is different than getting a 4) sooner than later, that's what matters. If you're not that good to begin with and only hit MIF at the end of block, then having a scrooge isn't your overall problem (which is not to say that you won't make it through the program, it will just be harder).
Scoober, I copy all, so this isn't directed at you, just putting it in perspective.