The prediction was that, after the November 2021 elections, the bipartisan federal infrastructure bill would "sail through" Congress without serious further obstruction from progressives.

Key facts:

• The bill in question is the Infrastructure Investment and Jobs Act (IIJA), also known as the bipartisan infrastructure bill or Bipartisan Infrastructure Law.
• It had already passed the Senate on August 10, 2021, but was being held up in the House in a standoff between moderates and progressives, with progressives tying it to the larger Build Back Better reconciliation bill. (en.wikipedia.org)
• After the off‑year elections on November 2, 2021, the House brought the IIJA to a final vote on November 5, 2021, just three days later. The bill passed 228–206, with 13 Republicans joining most Democrats. Only six progressive Democrats (“the Squad” and allies) voted no and did not succeed in blocking the bill. (theguardian.com)
• Once the House agreed to the Senate version on November 5, the bill’s congressional journey was complete; President Biden signed it into law on November 15, 2021. There was no additional congressional obstruction from progressives after that point, since no further votes on the IIJA itself were required. (en.wikipedia.org)

Interpretation relative to the prediction:

• “Sail through” / “pass quickly” after the election: The last needed congressional action (House passage of the Senate bill) happened almost immediately after the November 2 elections—on November 5—after months of prior delay. That matches the prediction that, in the wake of the elections, it would move quickly.
• “Without serious further obstruction from progressives”: Progressives had been the main source of obstruction before the elections by refusing to pass the infrastructure bill without simultaneous action on Build Back Better. After the elections, they allowed the infrastructure bill to come to a vote and did not use procedural tactics to stop it. A small group of six progressives voted "no," but the bill passed comfortably with bipartisan support, and their opposition did not create any new or effective obstruction. (commondreams.org)

Because the bill did indeed pass very quickly after the elections and there was no successful or prolonged new obstruction from progressives in that post‑election window, the prediction is best characterized as right.