Did you do further testing and confirm this?
One of the most common reason on why a game could not be remade is, which is something I cannot back up myself with proof (I have to say I remember reading this from a Riot employee, but I cannot find the thread. It's not on the /remake FAQ. Perhaps I imagined it or I just can't find it anymore), is that if the player is attempting to connect to the game while the game has already started, the /remake function WILL not be available. This is what I used to post on lots of bug reports about /remake not functioning to the players' expectation.
All the player has to do is afk/disconnect for 90 seconds. If they move afterward, and the time reaches 3:00, the /remake can still be available. So, with that said, this post could be flawed and can lead to mistakes and influences other players' thoughts and expectation, which can lead to more confusion. The item probably has 0 IMPORTANCE.