"The reason the other families aren't on TV are because their loved ones are still alive." Wow, this sounds like a horrible, tasteless burn to end the statement with. And I am a Tesla fan.
I can't see why they couldn't say something like "We are proud of this record, but continue to strive to improve and save even more families from this pain" -- still supports the product (which I'm not is the right path to take, but it's clearly the path they _are_ taking), but acknowledges the grief and avoids so directly/crassly comparing to it others' happiness.