On one hand, I sense that the same people who were in the shorts crowd of the Tesla 'boom or bust' Model 3 era ($TSLQQ) are now piling up against SPCX (e.g. Ed Zitron). Betting again Elon is very risky. And on the other, boy that huge valuation is scary.
The situation could be that there are two intertwined bubbles: an AI-tech-bubble and AI-financial-bubble, both at the same time and only one of them is going to really burst and affect valuations. If that happens, we can only guess the period of time it takes for the S&P 500 to recover.