Fuck no. Biden, Harris, and the Democratic consultancy machine did not run a presidency or a campaign that came within a million miles of supporting that claim.
In a populist age, like we are in, what beats right wing populists (fascists) is left wing populists. The Biden presidency nudged the party in that direction, but neither he nor Harris were capable of running a populist campaign.
Yes. Neoliberalism fails wherever it is tried, and the US managed to export it across the western world. What's going on in the US isn't unique and the same dynamics apply.