I don't think many people have picked up how valuable digital tickets are for marketing purposes - a reason for this push to digital is because it generates more value for the club - take a look at this page for an example
https://fortressgb.com/the-platform/
FortressGB is shown on the ticket, when I've had to use it so I suspect it is the platform used.
So £25 to 'opt out' of this marketing ????
Don't believe the reasons the club are stating.