I do agree with him that Sonys first party titles largely failed to come close to their hype apart from Bloodborne and The Last of Us (which is also on PS3). I wouldn't call it sucking though, more like underwhelming.
As for Splatoon, he's right that he can't be more wrong than Pachter, although that's hardly an achievement. 6 Millions sound exessive, but let's wait and see, maybe it's the next big IP from Nintendo with sales on par with Kart and Smash. We'll know more about this after launch. I hope he's right on that one, but fear it will fall short of that prediction.
@OP: where did you find that article? Or are you that Sebastian Kramer in the end?