As for where I don't understand, I think you're the one that doesn't really understand that Funimation just doesn't care how many episodes you get on each set. You're still going to spend 50 bucks on it, whether there's ten or fifteen episodes. That much should be evident by the fact that 11 episode sets became rather common by the time season 4 rolled around. Ultimately, it's a filler set, one that came on the heels of the whole season 4 debacle. But it's such a tiny thing to be pedantic about.
At risk of ganging up on the kid, who was pretty rude in his comments and probably deserves a small amount of it, 100% this.