What's the problem with "doing as they're told"? You seem to have a real issue with this.
The same "doing as they're told" is simply "following the rules and regulations" of the venue, for which the club is now losing money, because a section of the fan base isn't following them.
Incidentally the club is not even going after individuals to recover these lost earnings, merely asking them to follow the rules of the stadium, which apply to all.
What they are being told told, and let's be honest the club is being very gentle about this, folk are being asked not even told, is to do the right thing regarding sitting in your seat and not congregating in gangways.
If fans can't create an atmosphere without a need to break the rules of the venue and lose the club money weekly then it's a pretty sad state of affairs.
It is such a reasonable request to sit in the seat allocated. It really is.