Whatever you think of the blog post and Musk's spin - he puts his money where his mouth is. He's put into writing that if a 3rd party investigation into the fires finds anything they can do to improve safety - everyone gets a free retrofit. And short of an owner actively trying to destroy their car, Tesla's warranty will cover fire damage.
How many CEO's have that level of confidence in their product? Can you imagine Honda, Audi, BMW or any of the others reacting that way to something like this? And they've been around for much longer.