They are much better now (other than the exploding Takatas). I think their detonation level is variable, so they can respond appropriately to a given accident.
I know they were literally ripping heads off of infants (well over 100 of them). That must have been a bit annoying for the soccer moms who got into fender-benders during a milk run. Needless to say, the media, dutifully, spiked most of those stories, but it leaked out anyway.
How did they rip off an infants head if the infants were in the back seat?