So there's a theory I showed to Papagenos that I want to share here, that may actually put the nail in Minecraft
A Cubivore spirit was found in the game, specifically of the pig. Now, the pig is very visually similar to the Minecraft pig. A theory floating around is that Verg's source perhaps saw the pig at a fast glance and just assumed it was Minecraft.
Cubivore is a
very obscure Gamecube game, one of the rarest actually,
no one would recognize it at a fast glance. If you showed an average person, they'd probably say it was Minecraft. Imagine maybe getting a look at the spirits early in development and suddenly seeing a blocky pig in there, wouldn't you jump to "Oh! It's Minecraft!"
In fact a similar argument could be made on the insistence of a Square Enix rep: We now know Cloud was the last fighter to be brought back due to Square being difficult to work with; could it be possible Verg's source saw very late-game meetings with Square going on and assumed "Square DLC"?
And to answer the
"But Verg now says Minecraft is a boss!" argument: The leaks prove that there IS no Minecraft boss in the game, and he's yet to answer for this discrepancy. Adding a boss into the game with DLC seems unlikely since Reggie recently doubled down on the "Fighter, Stage, Music" format of DLC distribution. And if it WAS going to be DLC, that implies that Nintendo picked their DLC THAT far ahead of time... just to sit on it and do nothing until the game launches. Sakurai seemed to frame it as if the DLC was decided just then.
There's also precedence for a mistake like this happening: Remember when everyone was SO sure that Shovel Knight was a lock for Smash 4? It was because some insiders saw the Shovel Knight amiibo and just
assumed it meant he was in Smash, not helped by there being a very limited variant of it with a gold-colored base, just like the Smash amiibo
This could all actually be a case of mistaken identity. It may not confirm Banjo, but it might put the competition down