Agreed. It's a shame that, at least for the majority of the Gen VI leaked information/data/images, people on here seemed to completely forget about the spoiler tag's existence; in my opinion, if that was successfully implemented and put to use by posters, discussions would be much easier to be part of or avoid. Ultimately, a datmine does seem likely, so I do agree, unless Serebii himself or any of the mods can put this to rest:
If you are looking to avoid pre-release spoilers with merit and precedentfor Sun and Moon, whether it be the roster, story, or what have you, steering clear of this site and almost every Pokémon forum on the internet is advised as of the release of the demo version.
Who knows? We might not get anything; but, likewise, we could get everything. I myself know that after the day of the demo's release I'll just be sticking to the main site up until December's CoroCoro leaks next month (I have some extra waiting to do myself because of the awkward European launch).