The discussion of IRs and inactivity is a red herring in this case. This case is not about the IRs, or punishing people for inactivity. Please stop bringing that up, and quoting messages about the general haranguing people for not moving. (That's part of what generals do, anyway.)
If you have nothing more to go on that this one message from the ruler, which happened at about the same time that your character was actively criticizing the realm council, then I don't see anything to go on here. Your character was doing exactly what the ban reason in your family history says he was doing. Anf if the council of Lukon wants to run their realm as a tyrannical place whee you're not allowed to criticize the government, then they are allowed to do that.
Unless you have something more than that one single message you've shown us 5 times, I, personally, don't see anything worthy of a case here. This is almost certainly just a misunderstanding, combined with some short tempers. Just shake your head and move on to the next realm.
