>>38678968A copy breaking street date isn’t nearly as big a deal as a demo imo. It’s usually limited numbers of copies in the hands of nobodies. Odds are they lack them now how to datamine the cartridge and spoil everything in the limited window between leak and release. demo on the other hand gets into everyone’s hands including data miners so within days we have the entire Pokédex picked clean and their full 3d models uploaded to everywhere.
That said game freak does give too much away in their own promotional material. It was a terrible move to spoil the whole delta episode before the game even came out. Not to mention the sun and moon reveal season just kind of shit everything out unceremoniously. They could get away with a fraction of what they actually revealed last time if they start by teasing us with shillouets and build an air of mystery around each actual reveal.