My DSis and DBIL have a son. If it is relevant (I think it is), the child, my DN has SEN.
My DSis is a big fan of a few sports teams (two in particular). From my perspective, they make a lot of effort to make contact with the teams and their players, especially through social media, where they use their child as a pretext - "DN is a massive fan of X, it would make their day if you can send them a message on their birthday / Christmas, etc".
It seems really obvious that they are doing it for themselves, and not for DN, who couldn't name these players or understand what sport they play, even though she is dressed up in the kits a lot.
As a child, I remember getting some signatures on few occasions of the local football team, so it's not as if I have an objection to any child making contact with football teams.
Am I unreasonable to feel uncomfortable with this?