And only because it's the crowning achievement of the Obama administration, which could have better but GOP and even significant public sentiment were against the ACA.
I know a lot of people bitch about how it's not perfect, and that's the point--it's imperfect and should be improved as these things go through legislation cycles and the general public trends towards progress. But these same whiners "I want something perfect, not good" seem to forget when preexisting conditions were NOT covered by insurance companies or they charged a lot more.
With COVID, millions more Americans now have preexisting conditions.