Would rather stay in 22. Previous years when I have stayed behind, opponents have generally been more "grown up" after release of the new game. Happened instantly on release date from 18 to 19, and from 20 to 21.
One reason could be that it would end the use for points, thereby cutting potential income for EA. Not necessarily a good reason, but at least a defeater for your "no reason" argument. As for your "99%" stat, I would love to see your data.