The dems have to have 60 votes for that one, not 50. Unless they ignore or bypass the Senate rules like they did to pass the recent increase in the debt ceiling. That was supposed to be a one-time thing, but my guess is they'll try to use it for whatever they can get 50 votes for. But here again they have a problem with Manchin and Sinema, who have said they won't support that idea.
What this really makes clear to everybody is what will happen if and when the democrats ever get the necessary 50 votes in the Senate to do whatever they want to, plus control of the house and a democrat in the WH.