I'm a little lost with this tweet, haha.
For starters, was there confirmation that the Sonic model didn't get updated? I see no reason for the models to be different unless there was somehow some weird inconsistencies in the current build. (Edit: Okay, since heard that the supposed length difference could be due to angles. That makes a lot more sense, haha.) To be clear, I know some fans are super pissed about the model. I don't really mind it, but given the difference, the most logical answer I'd think is that one of them is from a different build. And this isn't an early build? When most games are revealed, the footage shown isn't final. I'd think this is still in development to a certain extent, and nearly finalized.
Are some people coping? Yeah, probably. Though these two things I don't get. Honestly, game could turn out good, it could turn out bad. I'd prefer a good game obviously, but eh, not the end of the world if it's lackluster.