The Flash industry suffers the same curse. I can and do remove games and even entire accounts from my distribution feed. One thing I did do to mitigate it is to let individual people have their own personal listings so people can still get their games if they're explicitly looking for them. Ultimately you have to just man up, ignore the details and don't even bother telling them why they're rejected - that sucks for…
Indeed, there is such a low barrier of entry to creating games these days with kits and drag / drop interfaces available. It is great for the developers starting out, but generally speaking content made in this manner lacks the polish that is required to stand out.