Remember with Obamacare about how there was a huge push to get young people to sign up for it, because without healthy young people paying too high premiums, the system would fall over with the costs of the elderly? Maybe that is why young people didn't want to sign up for the ACA, and they needed to enforce 'penalties' for not having health care.
If young people were actually charged a fair market rate for their health insurance, they would sign up in droves because it would be dirt cheap. But when you make them pay far more than is reasonable, because old people need health insurance too, then that is how you get a system where no one wants to sign up for it until they are legally forced to.
The ACA in this sense completely subverted the point of insurance. So, maybe the right doesn't understand insurance, but neither does the left.