I don't want to be taking sides. But there are still people who don't want to gamble with flashing custom ROMS and stick to 'stock-with-a-little-mod' ROMS. And by that I mean stock ROM with bloatware removed, launcher modified, and the like.
Just like me. For now I don't think I could gamble with playing around with my phone. Nonetheless, I think I'm pretty satisfied with the GB I have now. I admit I'm a lil disappointed with Sony pulling the plug on the Xperia PLAY. But hell, I'm contented with my GB. I don't think I can stand a day with my phone showing off epic UI but can't even properly play my games. After all, the PLAY was supposed to show off with games, not some fancy UI. End of story.
I see your point, however, I would assure you, it isn't just about the fancy UI or any aesthetics alone. Which most people keep trying to defend with, saying people are butthurt cuz they didn't get some fancy UI and/or too dumb to get a custom rom. However, that is the least of the issue at hand.