I know from being a Monterey Trail supporter that it can be very difficult to go independent or swap leagues in between realignment cycles.
Davis pulling out for football-only is smart, and should be a trend. DHS could easily slip back into the Delta, making it a balanced 8-team league. Or they could simply play most of the Delta teams in what is now the league-season when the 7th team is the odd man out.
As for Grant moving back to the SFL for football-only, I think that ship has sailed. Grant is in a great spot now because they will always be competitive/dominant in league play and can schedule high caliber out-of-area teams to challenge themselves without worrying about missing the playoffs. Additionally, the SFL teams have to unanimously welcome Grant back. I doubt that all of the SFL teams would agree to Grant returning. MT tried to swap with Grant and head to the SFL a few years back. It was rejected out of hand by almost all of them.
Anyway, I know you are just venting. There are a bunch of us on this board frustrated with the alignments when we can all see other sections doing a better job of sorting their football teams. The Davis-in-the-SFL scenario was always going to be an obvious disaster with football in the mix. So preventable.