Exactly, all Legendary Event Pokemon stars in there own movie respectively.
This shouldn't be surprising to anyone.
He was trying to refer to the fact that the legendary is revealed in February, as the movie title is finalized in February.
Also you are wrong because Meloetta had a longer and earlier TV appearance than its short appearance, and its marketing more or less geared towards the former than the latter(outside of its initial reveal).
Edit: Note: I was more rebutting the fact that Meloetta didn't have an individual movie, rather than the fact that Meloetta didn't have any cinematic appearances, just in case future readers might be confused.
This should also shoot the whole out-of-dex-order appearances Legendaries might have, as Diancie is now basically confirmed to be the new pixie, and will likely get annual events to match that fact, whereas Volcanion and Hoopa will appear according to their dex numbering(I can't really say whether they will appear in the same movie or not though).
Edit 2: Note: Of course, this doesn't change that we have "conflincting" reports about their Dex numbering, as Volcanion and Hoopa's orders are seeming reversed for their Central Kalos Dex order from their National Dex order. So maybe we are going to have another double dose again.
Japanese and English reveals have been basically been simultaneous so far in regards to the games. I'm wondering how this is going to work with the event Pokemon now, since the anime (and thus the Movies) are still behind Japan (though for an understandable reason).
So, will we just have staggered reveals, like in the past, until the US is gets the movie?
Will we get an English reveal in a couple of days, but just not have access to Diance until the movie is released?
Or will they hopefully release Diance simultaneously to the world, despite when the movie hits...regardless of how extremely unlikely that is?
If it doesn't happen this week, it won't happen until the event IIRC. Though previous Gen VI Pokémon has (more or less) simultaneous reveals, event Pokémon are traditionally unmentioned until their global events outside of Japan. It is mentioned in Japan early because unlike globally their merchandising starts appearing on websites and lists around the release, though obviously the majority of the merchandise is still kept until the actual movie release.