A quick search doesn’t find it in either the Canada or United States versions, for example. I wonder if that’s due to better consumer protection laws in some jurisdictions than others.
Now that I think about it, it might not even be consumer protection but instead a GDPR issue. I’m in Europe. Users becoming inactive can actually force companies to delete their data. Ubisoft might not have any other choice than to completely delete inactive users and of course they’ll do what is best for them, not for the inactive users.
The GPU of the series S is simply a lot worse, socutting quality by a bit won’t cut it. I also suspect that since they always quote the split screen as problem, it might be about the number of textures to be loaded in when the game is kind of running twice, not the quality.