There are 1.5 million Tesla cars out there on the road. Most of them, nearly all of them really, are not on fire.

I understand that. But if I tell someone at work that I "solved the XYZ problem", I mean that XYZ doesn't happen any more.

If there's a claim that Tesla has "solved the fire problem", I would hope there's a good explanation for why fires still happen with the newest model delivered 3 months ago.