Its obvious to anyone that knows that he (or someone) bought his win over Daigo. It isn't a notable accomplishment.
So, in the fighting game world - he has done absolutely nothing.
So, the shut up noob response is completely appropriate.
Sure, it's appropriate in regards to the shallow surface y'all are engaged in.
You see someone famous talk shit to the MK community after winning a fraud match against one of the best SF players. You say "umm, you're a scrub and the match against Daigo was staged, stfu you suck. Now go away". This is assuming he's only talking shit because of that match and the pseudo notoriety he got within the FGC.
This is the position y'all hold. I agree with this, IF that's the position he's actually taking.
To me, it's bigger... ish. I see it as an opportunity for our community to grow. Lupe has a huge following and people who follow him aren't necessarily apart of the FGC. They see him having "beef" with Fox or MK players, they get interested. Obviously they will be on Lupe's side, but what if it gets even ONE more player in our community? It's all about expanding our horizons for me. I believe this community deserves much more attention than it gets, even though we can be particularly shitty at times, we have worked hard to build what we have, I only want it to grow from here not diminish.