It would have been fine with me if they didn't include the part about agreeing to their own private terms of use on a completely different website. What a strange way to trick people.

Other than that it just seems like a way to ask people to allow them to use replies in a video or something.

Edit: But wait, this is actually STILL ambiguous! On twitter, a 'mention' happens automatically when you reply to a tweet, because it includes the name of the account replied to, so it's not clear whether you actually have to tag @disneyplus or not.