Seasonal colds don't result in potentially months of "long-cold" symptoms, nor do they significantly increase the risk of diabetes, nor do they regularly hospitalize and kill people on a large scale.
I am operating from an assumption that COVID-19 is bad and kills people. Unlike the other mandated vaccines, though, vaccinated individuals still catch and spread COVID at high rates. But the reactions to me very much sound like, "We must do something, and this is something."
I'm only asking for models here. Is the CA legislation based on scientific models showing that mandating COVID-19 vaccinations for all school-aged children will meaningfully impact health outcomes at the society level? Or is it motivated by a desire to overcome COVID by all means necessary, even ineffective ones?