

The ones that voted are either A) Retiring, or B) Not up for Reelection in '26, yes.
They almost certainly did this either under pressure from the air travel lobby to not let this disrupt the thanksgiving air travel season, or because they were actually worried that Trump was going to get enough votes to nuke the filibuster.
In my mind it was 100% either pressure from the air travel lobby, or because they thought Trump might actually get the votes to nuke the filibuster.