The mental gymnastics that some people will go through to defend a brand is... Mind boggling
I'm not suggesting we get out our torches and pitchforks, but this is bad. The failure mode for any electronics equipment should not be "fire". Specifically, electrical engineers go to great lengths to prevent fires.
So yeah, it's good to keep a sense of perspective. BMW is doing the right thing here, but this was a mistake. There's no need to jump in and defend this as some kind of expected result of owning an aging car. It's not.