If people are bullish on Nvidia because the hot new thing requires tons of Nvidia hardware and someone releases a paper showing you need 1/45th of Nvidia's hardware to get the same results, of course there's going to be pullback.
Whether its justified or not is outside my wheelhouse. There's too many "it depends" involved that, best case, only people working in the field can answer, worst case, no one can answer right now.
Because most people's trips are the commute and they haven't been given more time and money to go and road trip more. That isn't analogous to computing though. People do the same things broadly they've always had with computing, but we've figured out how to create a system where your computer today running microsoft word is 100x as powerful as your computer in 1995 also running microsoft word and you feel the need to upgrade your hardware every couple of years so you can continue running microsoft word. It is the perfect model for exponentially dumping raw compute power into the void to perpetuate value creation. It will not stop in our lifetimes I expect. In 25 years our computers will be 100x more powerful still and we will still have MS word.
That depends on how whether the demand increase multiplier due to the lower cost per result is lower or higher that the efficiency increase multiplier. It can be either in general.
Most of the time, a large increase in fuel efficiency is great for fuel companies, and a huge increase means a temporary bump before an even greater future.
Whether its justified or not is outside my wheelhouse. There's too many "it depends" involved that, best case, only people working in the field can answer, worst case, no one can answer right now.