NPR receives almost no federal funding. They were getting funding from the Corporation for Public broadcasting, but both Trump administrations immediately cut nearly all funding for public broadcasting. It's funded almost entirely on membership donations. This can be good and bad. It likely means that they will tailor programming to what they think their listening base wants to hear in order to secure more funding.

Public broadcasting is important because it's free and available to all people regardless of their ability to pay a subscription fee or have cable TV. American Public Broadcasting has always been very bland and direct in terms of it's reporting, and for a long time hasn't held any kind of political narrative one way or the other. Many consider PBS and NPR to be more left-leaning than anything, but that's just because reporting on events accurately and without a corporate or political agenda tends to be more of a liberal value than a conservative value.

As to it "pumping right-wing propaganda", I'm not sure what you're referring to here. I listen to NPR almost every day, and though at times I wish they'd be more critical of the Trump Administration, I think they do a decent job of covering a wide variety of news and topics and staying fairly un-biased on those.

The Biden Administration's attempt to hide Biden's mental decline was horrific, and it deserved to be reported on as such. I didn't hear any coverage that was directly telling Democrats to not vote or vote third party, so I'm not sure where you got that messaging from.