As recently as yesterday I was defending Biden. Think I'm done now. If I hear the word "ironclad" tomorrow that'll confirm it. He will still get my vote, but that's it. I probably convinced half a dozen people to vote in 2020, this year I will not bother trying.
Why is this surprising to you? Not recognizing any of the current Palestinian governments as a sovereign state has been policy for decades, even if the US is supportive of an eventual two-state solution.
Why did you think the middle of a war (one started by a Palestinian group, if not the PA) would be when that changes? Even in the optimistic scenario where the end of this conflict somehow gets everyone to the table and some non-Hamas authority ends up governing all of the Palestinian Territories, recognition of a Palestinian state would only happen after that point.
