From personal experience, Cruise and Waymo drive far more comfortably than FSD 11.4.2.Can't compare what you see on YT with what you experience. Afterall we all thought FSD was smoother after watching YT until we got it ourselves.
That's why we need independent people who can ride and compare on routes not selected by the company.
FSD has improved a lot in recent months but it still has a long way to go in achieving low g-force passenger comfort. Stopping and accelerating in the Cruise or Waymo is very floaty — everything is typically soft and smooth and with no strong accelerations through turns. FSD is still robotic. FSD makes less obnoxious acceleration and braking much of the time now compared to earlier versions but it is still sudden and precise like a step motor. Cruise and Waymo average-out their braking and acceleration into smooth and predictable acceleration/deceleration curves like a professional chauffeur.
Cruise and Waymo still make mistakes or become momentarily confused but they do it elegantly. Tesla knows how to do this. Tesla’s regen braking to a full stop is very elegant and smooth but FSD doesn’t appear to use it and seems to control braking itself (poorly). If they could find a way to offload some of the normal braking details to the regular regen firmware it would not only do a much better job but it would also offload some of the cpu overhead from the FSD computer.