I agree, a differing argument does not qualify someone as an idiot. I hate stall, but a lot of insanely smart (much much smarter than me) players play stall.
What DOES make you an idiot is the argument "We should unban this thought-to-be-broken Pokemon because it would be interesting," and who then follows that up with a call to unban another Pokemon that was more conclusively proven to be broken, with no actual backing argument.
I reserve the right, as should the rest of you, to treat toxic ideas entering the community with all the hostility that my body would treat a toxin entering it. I am a very firm believer in the idea that some things are not worth salvaging. If a user is asking why Serperior is broken and brings an example as to why he thinks it isn't, that shows an open mind that can be nurtured. We can show him replays of the best players UU has to offer being flattened by Serperior, would-be counters being beaten by Serperior's excellent movepool and the minimal support it needs.
But for someone arguing that a Pokemon isn't broken, or arguing to keep it despite acknowledging it being broken, for ideals completely contrary (I swear this wasn't on purpose) to Smogon's purpose, I don't think we need to spend the time entertaining and rationalizing these posts when it's simply easier and healthier to ignore it and move on.
EDIT to below: You're absolutely right, and I am used to a higher level of thinking because of the nature of UU before now. I can only hope that our new leaders and everyone will pitch in to keep us on our toes. In fairness, posts like these did happen before, and they got much the same treatment as is happening now (someone dismisses them, someone calls out the first guy for being hostile, first guy argues that he's in the right for how he treated the post), but maybe I'm a little more on edge because for god's sake these people can actually fuck the tier up now. But like I said, gonna trust in the leaders, Council, and other esteemed members of the community to not let that happen.