Not any more infantile than assuming too much and acting on it, really. In fact, it only does make you look insecure, which is unfortunate as I don't think that's the case.
Yes, you want a good system. We've been through how that would look, and we've been through why it doesn't work right now, as the game is as it is, and the servers are as they are.
However, to have people who keep watch over who causes the most desyncs would require that we have more tournament organisers. A lot more. We already need more, as I see it, as most tournaments are still very chaotic. Even if we got a bunch more, most who desync a lot stop doing so after a period of time, right in the middle of a tournament. There's no way to tell for what reason, and thus we can't act on it as you would like. It would be far too drastic, and having the small risk we have now is a small price to pay. We've been through this as well, though. I don't think we need to repeat ourselves further; we simply disagree.
Now, a change in the future may become relevant then, if we do indeed get a lot of people who will create desyncs on purpose. Sure.
Edit: We are actively reporting desync bugs as a community, and the devs are working on that bug. It's a rather annoying one, after all.