Most of them don’t, go to a local pub some time. Some people misunderstand that companies use puffery like “The Best” specifically because it doesn’t mean anything. But you will rarely find someone make material statements that aren’t true, if an advert mentions the EPA rated gas’s mileage it’s going to be close.

Musk on the other hand has this odd issue of trying to overstate his accomplishments such as calling himself a founder of Tesla for some bizarre reason. I don’t know if imposter syndrome or what, but it’s been very detrimental for stockholders when he had Tesla rescue Solar City rather than letting it fail etc.

Making material statements about self driving was just dumb from a legal perspective compared to puffery, but hey it sold some cars and he’s not in prison so ehh it worked out.