You say that now. But a LOT of people weren't as sure.
Being the huge Punch Out fan that I am, I knew that very well. But a lot of people thought it was a generic wrestling ring, for starters.
Which further proves my point. Sakurai's not going to leave an obvious hint in the shape of a SYMBOL of all things, to hint at a stage or character. Which is exactly why the Little Mac trailer cleared up all confusion on the Boxing Ring stage.
Yeah, we know Captain Falcon's in. But we've known this through other hints before and outside his symbol in Samurai Goroh's reveal.
I've said it
before Little Mac's reveal, and I say it now.
Aside from that, there were more people that believed it to be Punch-Out related than a damned wrestling ring (especially since wrestling rings only have 3 ropes; boxing rings have 4)
As for your point, it adds literally
nothing to it. The stage, regardless of lacking Punch-Out decorations (which many attributed to it being a special "Smash Circuit" as opposed to a specific Circuit from PO) wasn't given
any label whatsoever. Saki? Was given the generic Smash symbol like EVERY OTHER non-staged, non-character represented franchise. Just. Like. In. Brawl.
If that doesn't drive the point that Sin & Punishment is not getting anything higher than an Assist, then it's clear delusion.
I mean, even the Isaac fans have more ammunition with Isaac
not being present in that clipshow.