It may be too much to expect Obama to admit as much, and he didn't in remarks he made in Boston, instead reiterating the benefits of the new law. Better if he had explained what he failed to make clear three years ago: Moving some people off their current plans in the individual insurance market, which is how about 11 million people get their health coverage, isn't some unfortunate side effect of Obamacare. It's part of the point.
The law sets minimum requirements for insurance plans. They must cover benefits such as maternity care and mental health care, for example, and provide preventive care without copayments. Insurance companies cannot deny coverage or charge more because of a pre-existing condition.
The lack of such requirements is essentially what allowed insurers in the individual market to offer the cheap plans that are now being canceled. Plans that already existed when the law was passed were protected but only so long as they didn't contain significant changes.
Obamacare was designed to take that thicket of individual plans with variable costs and benefits and replace it with a smaller range of uniform products that people can compare on an apples-to-apples basis. The cost of insurance for many people will go up as their coverage improves, which is why the law includes premium subsidies for those who need them.
In other words, the individual market under Obamacare was always going to look dramatically different from what came before it. If it didn't, the law wouldn't work. It is no surprise that some people who bought individual insurance are now seeing their policies canceled. The outrage is that the problems of HealthCare.gov are preventing them from shopping for other plans.
The fact that Obama misled the public doesn't mean that the change now under way isn't a good one.
The real promise of Obamacare has always been as much about systemic change as individual coverage: making a health-care system that is more effective, efficient and inclusive. If it works as planned, the Affordable Care Act will help millions of people get health insurance, and it will make that insurance more affordable for millions who already have it.