It seems that SFO's policy of having an intermediate company that buffers salaries is working well because I flew through there to Taipei after this whole situation and there was no wait.
I _just_ went though the line. It wasn't too bad (5-10min, despite having bio ID), but it was by far the worst I've encountered at SFO in the decade I've been flying out of there.
P.s.
And as usual, TSA doesn't understand anything about queueing theory and doesn't implement round robin / starvation prevention. Global services and clear get absolute priority over other queues.
No, it's accurate, because TSA (or at least the feds) ultimately pay for it, but the company has some runway it can spend to keep the employees working on the assumption it'll be paid later, I.E. a buffer.