Possible, though i would want to see a reputable source on it.
Of course, with ERISA qualified plans, which virtually all employment-based insurance was, the maximum disqualification period for preexisting was 90 days. If you went from one employment (therefore plan) to another, you weren’t disqualified on the new one at all.
80% of the population had some kind of health coverage before obamacare. Nobody ever knew who didn’t. Some would have been people who just didn’t choose to have it. Some would have been people who qualified for medicaid but didn’t bother because they didn’t need it right then. Some would have been illegals. Some would have been people who just plain couldn’t get it. But nobody knew then, or knows now, who those without coverage were or why they didn’t have it.
Now, of course, people who are subsidized can get the fairly bad plans on the exchanges. People who aren’t subsidized will pay more for those fairly bad plans than they did for insurance before. Some will still have employment-based insurance, but probably a lot fewer than before because of increased costs due to the mandates.
As near as I can tell, then, the people who benefit from Obamacare are those who didn’t have employer-based insurance, made too much to get medicaid, couldn’t afford forced-placement insurance because of preexisting conditions and who made substantially less than the median household income nationwide.
Everybody else, as near as I can tell, is going to be worse off.