Ok Obama and ACA (or more broadly his first two years). He likely reached out for two reasons. One: he wanted to mend the divisions after Bush’s disastrous wars. Get the country unified and back on track and all that jazz. Two: any intelligent candidate knows it’s unlikely they’re going to have control of Congress for all eight years, so he wanted to come off as reasonable and could be worked with, so that he could still accomplish things later in his presidency. I barely blame him for that. Who knew that the GOP was going to explode and become obstructionist to that degree because a half black man got elected. (BTW Biden learned from that and said nuts to it, he’s doing what needs to be done. Biden ran center, but is acting left. Let's see if it costs him the election when left voters don't turn out.)

And what was the thanks for the most progressive healthcare legislation? He lost control for the next 6 years. And then the GOP tried their hardest to overturn it. (So no, not a watered down Republican healthcare policy. They fucking hate it.)

pressure with the power of the people

It's congress. The house or reps and the senate. It's not the people, it's congress. That's why Obama couldn't do much for his last 6 years. He lost control of the house of reps and the senate.

And to further prove this point, congress even shut down the fucking government under obama. That's where the power is. Bernie or obama or bill clinton, doesn't fucking matter. It's CONGRESS.

Democrats could do the same thing,

Dems need all 3 of presidency, house of reps, and senate to pass anything. They've had all 3 for 4 years of the last 24 years. And when they don't have that they need to reach across the aisle to do something as basic as pass a budget.

The GOP needs only one of those to block literally everything. That's mostly what the GOP wants to do: Block progress. Hit the big giant pause button on society. And they can do that with only 1 of those, which they've had for 20 years of the least 24 years.

That's the unfortunate reality of progress. Progress takes all 3 houses. Progress takes time, effort, and hard work.

Stagnation (or regression) requires fuck all.

So no, the Dems can't go left like the GOP goes right. If you want things to go left, then you need to give Dems consistent and overwhelming victories on all 3 houses.