I mean, Labor Day is usually the end of Summer unofficially, so pushing it back now isn't going to hurt it. It gives Summer a chance to die down a little more so that fall will be open for Blame to be a hit. Calvin knows what he is doing. The 18 Months era was a success in the US for a reason as was Summer
Yeah summer is still getting a lot of play, it's a smart move overall. But wow didn't know he released the single cover that early. Maybe his team should make a new (and better) cover for the new release date.