Your character assassination of FSD not withstanding, why do people think FSD is smarter than it is? It's a driving assist system. It's not contemplating the meaning of the universe and existence. It's driving. You, as a human, can ask the deep questions, and ponder why the cars are all stacked up. You can come to the conclusion that those cars are probably in line waiting for the upcoming turn, but it's really just a guess. I guarantee you that there are times in your past where you sat, patiently, in line for an upcoming exit/turn, and then later, when you start to see lots of people changing lanes, find out there was an accident up ahead, and you just wasted tons of time sitting there like an idiot. But were you an idiot? You made a decision based on the information you had at the time, and didn't know there was an accident up ahead.
My point is that in that situation - DISENGAGE FSD AND DRIVE MANUALLY!! You, as a human with a sophisticated brain that's taken hundreds of thousands of years to evolve, can outthink a computer that's been learning for just a few years.
*ugh*