It and HR 1 try and enshrine in law all the means the Democrats have used to win elections with unchecked balloting via mass mail-in, ballot harvesting, drop boxes, automatic voter registration, etc.
But as Orange County has shown these advantages are largely illusory rather than permanent. They also greatly diminish in off year elections such as mid-terms where there is much greater voter apathy.
So, while the Democrats might think these bills will give them some sort of ultimate power, they really will be of fleeting advantage at most and likely the backlash from getting them passed at all, like abolition of the filibuster, will ultimately work to their deficit. Politics, like a pendulum, has a way of always working back to the center.