SAG isn’t an organisation though
It’s just a collective of other organisations like the club, the council, police, fire brigade etc.
My money is on it being a national police directive (college of policing or NPCC) that some forces are choosing to look like they’re doing something about.
And, needless to say we will enforce it more than anywhere else. At least for City fans. Just like the early days at the KC where officious stewards were telling City fans to sit down whilst leaving away fans unbothered by their attentions.