California created the "ballot proposition system" which causes the ballot measure to become part of the California constitution because the state political system has ALWAYS been corrupt and dysfunctional! The system was created in 1856!!! Just 6 years after becoming a state - so FU in its very origins. Because politicians could NOT be trusted to be honest or civilly reliable to the mission of the state!
https://en.wikipedia.org/wiki/California_ballot_proposition
As historical precedent has shown, most California politicians are still corrupt and dysfunctional ALL the time.
So after 165 years, why is anyone surprised or even posing the question??? It's baked into California history and norms!