That's the problem. The vast majority of people don't do their own research and simply trust whatever they're told. That's your choice. I choose a different path in life. Stay in your safety bubble if it makes life easier for you. Good night.
Your research seems to consist of looking for information that supports your pre-determined opinion, while completely ignoring the consensus opinion of epidemiologists from around the world.
As for the "56% of Californians getting COVID-19", that is not pulled from thin air. It is the result of their models. Below I have linked a recent review article on mathematical modeling of pandemics:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5348083/
The models clearly have a ton of uncertainty in them. I am sure 56% represented the most likely outcome, but the 95% confidence interval is likely something like 10-90%. Note the huge confidence intervals on trying to forecast epidemic growth from the modeling article linked above:
When the growth rate is teetering between exponential growth and sub-exponential growth, the actual result could be massively different from the model, and the model outcome reflects this. It is irresponsible to state "56%" without explaining the variance of the model result. However, I suppose the governor thought saying "56% if we don't take action" sounded definitive and was more likely to get people to listen.
He probably worried that saying, "this could result in 10% of people getting COVID-19, or maybe 90%, but the most likely outcome is 56% if we don't do anything." would make the populace say, "These scientists have no idea what they are talking about, they can't narrow this down more than 10-90%? This is a crock of shit, I am going to ignore everything they say."