I think he/she meant that it was listed for a lower price on Walmart.com than in-store at Walmart, and that Walmart couldn't pricematch to Walmart.com...
He does but how much influence does he really have there? I doubt it's enough to push them to 3.x just because. Pyston 0.5, the interpreter developed at Dropbox, was also just released a few days ago.
They're going to do what's pragmatic and cost efficient. Making everyone stop improving the product and porting the code base, is probably more expensive than just having one team maintaining and improving the interpreter.