Granny Clinton is for KenyaCare - which is a dagger to the middle class
Most anyone working for a large company gets their insurance through their employer. Obamacare does the following: allows you to keep your current insurance if you change jobs, keep your kids on your policy until age 26, requires minimum coverage amounts.
If you don't get your insurance through work, Obamacare prevents you from being denied for pre-existing conditions, gives you subsidies if you don't make enough to buy your own insurance, gets rid of those bogus plans that really didn't cover anything.
American health care was in crisis before Obamacare, with 16-20% yearly increases in cost. It was not going to survive one way or another. Obamacare slowed those increases, but maybe not by enough. We will eventually get to single payer.
If you think that Obamacare puts an undue burden on small (or big) businesses, which then affects the middle class, then you should be all for single payer. Just think if no company had to worry about the cost of health care.