It's not that the animation is outright bad. It's...
I guess I'll preface this by noting that since Tails' status as my favorite character has been on my mind recently, I sat down and figured out who my top 10 favorite Sonic characters were. Shadow was number 10--something I'd never thought possible years ago but they've lot of good work repairing his character. But...there's a big glowing asterisk to that placement. Shadow has a problem similar to Batman that often his coolness is used to dunk on the rest of the cast instead of making him cool along with the rest of the cast. Watching this gave me "*sigh* Happy Birthday Knuckles..." emotions again instead of praising the things the animation gets right. Like, you bring back Extreme Gear and the Babylon Rouges to positive fanfare only to have them job out early on? Why do that?