I think the regulators will simply go after any exchanges that deal with Tornado Cash, rather than Tornado Cash itself. This just causes a new kind of cat and mouse game to happen while the money laundering industry greases their palms.
To be honest, with the incoming Trump administration’s cryptocurrency-friendly views and the likelihood they will turn a blind eye to outright scamming, I think it will only be a matter of time before something huge really cleans the majority of folks out in the biggest rugpull of all time.
I can’t possibly know when that will happen if it does. But this speedrunning the wild-cat bank situation from ages ago is probably going to be interesting to watch unfold.