That helped a lot of people, but it's nothing? As opposed to what? What better plan did you have in mind that was going to get Liebermann to vote for it? The Public Option, something Pelosi got passed the House, got taken off in the Senate and was for Single Payer. If those were possible that what the ACA would have been shaped like.
Except this ignores the fact that Democrats have tried for years to pass better Heath care and not gotten far, because the system is not that simple to pass good bills in. Politics is compromise, and voting - don't have either of those you're left with nothing. Politics is not a profession which works right now, it's a slow, grinding, boring process which involves a lot of people and organisations to work together and you expect them to get this right within their limited window? That's when Dems have congress, of course, this get dicier without that and then Obama dealt with record level obstruction. I agree the Dems should have started from a higher position, too often Obama was too giving and that backfired on him. They can't be strong 24/7 as that interferes with their own internal negotiations and they need to flexible since making bills is a fluid process, not a static one.
Those voters are why we don't have good things. They're voting for Trump then end up losing their house because they couldn't get over a woman being president. Most of them don't even know what changes they want, they just change for the sake of change because they have no idea what they're talking about.
It is possible to count votes, not every Speaker is a doofus like Paul Ryan who takes bills to be voted on but didn't bother finding out who was going to vote for it. Pelosi knows her shit.