I mean, yes, ha ha, but I don't actually think this is a good critique. The metagame heading into the tournament -- like, what people chose to bring -- was pretty diverse and covered a ton of archetypes. It turns out that Eldrazi is just stronger (at least when it's got the element of surprise) than a lot of these other decks and it floated to the top, but that's an entirely independent event. If we hadn't banned anything, then we could have had... a bunch of Twin vs. Eldrazi matchups?
Like, as a show and an advertisement of the current set (which is what Wizards ultimately cares about) and as a demonstration of skilled players playing exciting and interesting games (which is what fans generally care about, or should) this PT was a huge success. If they need to ban out the Eldrazi deck, we're still better off to have had this PT first and then kill it afterwards.