Hahaha. Bugs are always fixed, so how come it isn't fixed. The ALAMOS event happened in June. The Shaymin is from August. It's been 6 and 4 months respectively.
People do have lives, you know. It's great that anyone does something for the Pokemon online community, weather that'd be host a fan site, contribute to it, make a hack checker, etc... but if Serebii didn't update his site for 4 months, I wouldn't get on his case about it.
You said since nothing can tell us if something is legit, then doesn't that mean you can just be making this whole thing up? They could really be legit this whole time.
He's right, and if you knew what legit means, you'd know it to be true.
Legit means using only in-game methods of making the Pokemon. The use of any external device was not used. A Pokemon you capture yourself, or obtain from the event yourself, or breed yourself, are examples of legit Pokemon. You KNOW that they're legit. You saw them get captured, hatched, etc...
Legal means this Pokemon conforms to all standards of a legit Pokemon, but it's actual origins are unknown. This is any Pokemon that looks legit, from the summary that you read on the DS screen, to the code it is written in. A legit Pokemon and a legal Pokemon can be identical. The difference being that you know the origin of a legit Pokemon, but not of the legal. An external device may have been used to obtain this, or a parent was hacked and this is the egg result, someone hacked a key item to get to an island, etc... Any Pokemon you get in a trade can be legal, and can be verifyed as such. You can not, however, with certainty say if it is legit or hacked.
An illegal Pokemon is one that can only be made via an external device. Illegal combination of moves, abilities, and so on. This can range from a Flareon with Flare Blitz, the infamous Wonder Guard Spiritomb, or a Belly Drum Aqua Jet Azumarill, or in smaller ways such as a non-event Pokemon in a Cherish Ball, or a Pokemon holding a key item, or a Surf or Flying Pikachu from the 3rd gen events still having it in the 4th gen games. The more common term is "hacked" Pokemon, but the term hack doesn't care if the Pokemon stats line up with in-game methods.
All illegal Pokemon are hacked.
Some hacked Pokemon are not illegal.
All legit Pokemon are legal
You link to the cesspool of the hacking world?
Hacking doesn't automatically discredit someone. If it wasn't for hackers, we'd never have many of the online Pokedexes which are taken straight from the game data, or know about some advanced game mechanics. And while the posters at GameFAQs may not be all doctorate holders, I've never noticed an inordinate amount of hackers there. Maybe they're more vocal since they don't fear a banhammer, but that's it.