Did the update for super smash bros. that added the upload to youtube option exclude that feature for the 3ds

Yes, the 3DS didn't get equipped with this feature. I can see why I didn't because the way the 3DS saves replays is it records the order of moves that were made so it won't take up so much system memory. With this recorded order the 3DS can recreate the match exactly as it was played. I'd know because I own a 3DS. :)