With all this end of democracy talk, I thought this was an interesting take by Balaji.
Because California Democrats do not hold competitive multiparty elections. No matter how the people vote, a Democrat always wins. The real election is thus actually a selection, where candidates are chosen before the primary in a smoke-filled room by the Party. And around the time one-party control was consolidated in the early 2010s, governance started to dramatically worsen, and California's growth rate suddenly leveled off: