This is how Musk works, and people keep falling for it - he whips up excitement with wild claims, then after the flurry of investement/excitement, walks back the claims with 'new' realisations. He pulled the same trick with bitcoin.

Self-driving has always and obviously been hard. Bitcoin has always and obviously been environmentally harmful. Language won't be obsolete four years from now.

He's not someone innocently and optimistically making sincere announcements. He's knowingly misleading people for profit.