No, it obviously shouldn't, because in the cases where it may "occur", the rest of the game is likely to (and has on multiple occasions) ignore it and pretend it isn't happening (including administrations). Why do they do this? Because there is no tangible effect on the game whatsoever from it "occurring". Therefore, one must ask if it really has occurred in the first place (from a mechanics standpoint, it has not).
Furthermore, there has been a completely inconsistent handling of the issue over the game's life and even post-2008, when secession apparently became a crime. This whole "let's crack down on secessionists and those who don't recognize the legitimacy of the government" is a suddenly-new concept in the post-dissolution world. Let us not forget that the RPP (and by extension, both the IB and the Federalist Party) are in effect the
Southern Secessionist Party, which is the only reason we even have this statute in place. If we're going to be consistent, then we obviously need to ban all of these traitorous fools from the game.
But honestly: can you imagine a world without President Duke, who actively encouraged secession? What about Kalwejt, who encouraged overthrows of regional and federal supremacy on multiple occasions? These are just the ones that pop into my mind; I'm confident if I were to really dig into the past, I'd find many examples of secession attempts post-September 2008 that were never prosecuted.
I've also made no secret about how I believe there has been systematic profiling and careful selection of those who have been tried over this. Practically (if not actually) all citizens accused and charged under this statute have been Labor Party members; if this weren't the case, then there would have been
many more citizens charged following the events of October 2014, heralding from all political movements. Instead, only the ones with weaker popularity and forum appeal (Snowstalker, Alfred, etc) were hunted.