When a full time job for most average workers can no longer provide food, shelter, housing, & transportation it's hardly the fault of the workers.
Businesses have been reducing benefits, both healthcare & retirement, for 30 years.
Part-time jobs have been on the increase for 30 years. Blaming Obama or the Democrats in general may make one feel better that there is a villain in the equation but the reality is we have more workers than we have living wage jobs.
Productivity gains, automation, off shoring of jobs, illegal immigration, the great recession, and the aging of the baby boomers have all played a role.
The ACA while certainly not perfect at least starts the desperately needed reform of our for profit healthcare system. Those that criticize it, either because of it's supposed government take over or that fact that it doesn't go far enough towards single payer simply deny the leverage of lobbyists and private money in our political system.