A lot of people will, if this IPO actually happens. But as is frequently pointed out a short is a market bet not a bet against the company and the market remains wild and irrational. You can be right about the company ultimately failing and still lose your shirt on a short.

However the price of CDS on bonds is already a strong market indication of where the market thinks all of this is heading. And none of that looks good if you’re betting on the AI exuberance continuing.

The bond market and the equity market care about different things. E.g. if the company has a 10% chance of going bankrupt and a 90% chance of doubling its market value, then paradoxically its bonds will look bad and its equity will look good.