no one is saying that you can't modify the system in this world. they are saying you can't run multiplayer on this system. Running multiplayer games isn't a right.
Now, your issue is extended for instance when people are locked out of their banking apps for running modified systems, and I'm much more sympathetic to you there. But just because a technology can cause bad things in one circumstance, doesn't mean its bad in all circumstances. It's up to society to say, its good to use this here, but bad to use it there. If one believes that society can't do that well, then all technology should be considered problematic.
Now, your issue is extended for instance when people are locked out of their banking apps for running modified systems, and I'm much more sympathetic to you there. But just because a technology can cause bad things in one circumstance, doesn't mean its bad in all circumstances. It's up to society to say, its good to use this here, but bad to use it there. If one believes that society can't do that well, then all technology should be considered problematic.