Yes. To some extent it is a matter of taste - by now we all ‘know’ Elon. He gets excited about new ideas and likes to share the ideas in real time. For some people that’s ok others not.Yes, and the battery development and timeline was probably unrealistic to start with. This is the same reason they increased the prices of the solar roof tiles by so much. They underperformed to their speculation of how they could curb cost and come out with the solution and they now had to rebaseline it to actual cost. Tesla has a habit of making detailed claims far before their testing and development is complete. For example, their first home energy storage was generation 2 before it ever shipped the first unit.
Hopefully the new battery production gets solved soon and we have Cybertrucks, Roadsters and Tesla - Semi-trucks available