You would assume wrong. California's grid reliability statistics are actually better than the national average:
Electric Utility Performance: A State-By-State Data Review https://www.citizensutilityboard.org/wp-content/uploads/2021...
The only statistic where it falls last is "AVERAGE AMOUNT OF TIME TO RESTORE POWER PER CUSTOMER, IN MINUTES (CAIDI) WITH MAJOR EVENT DAYS"
Compare the California's power reliability with West Virginia's before making any assumptions.