That we've, ultimately, taken human judgment out of the false start system by insisting that some technology (built, like all technology, by fallible humans and subject to malfunction) can tell us to the millisecond when a guy pushed off, and that we won't be reasonable but will insist that a .001 difference according to said technology (built by fallible humans and potentially malfunctioning) MUST be treated as a violation...
...is a sign to me that maybe the whole "one and done" FS rule isn't fit for purpose anymore. I don't even care if they go back to "everyone gets two" since the former "first one's on the field, one and done after that" was also unfair and led to unnecessary gamesmanship with purposeful false starting to take away the freebie. The schedule at worlds isn't so tight that it can't handle a couple of extra false starts if they happen. Giving everyone a second chance will massively decrease the necessity that the tech be absolutely perfect, because the likelihood of hitting the gun .001 "too early" is vanishingly small. You can't completely eliminate the possibility that it would happen, but it'd be darn rare. It will also, ultimately, let the world title be decided by the athletes, not officials and tech.