I'm not sure where you are pulling that 70% of Americans will receive a tax increase from.
That is what the post you responded to says. 70% of Americans currently receive employer-provided health insurance as compensation in kind. They will lose that compensation in kind. Because of sticky wages, they will probably not have that compensation replaced by compensation in cash right away (and because capitalism is strangling us all they might not ever see it replaced).
They will also receive government-funded healthcare, which will no doubt mean increased taxes.
Your response to this was that those people probably should pay more taxes. That is what I was commenting on! "Those people" are 70% of America.