> Is it even plausible for them to go back to just running the company as though it were worth $20-30 and pretend it never happened?
Your math is way off, they don't need to pretend nothing happened and go back to $30 / share. The crypto bubble (now imploded) isn't why they're still generating $4 billion in annual profit ($1 billion in operating income last quarter). It's not a critical part of their business; in actual numbers it was a modest party on the side for several quarters and some investors had hoped it would be more than that. The removal of the crypto boom from expectations, is causing a let-down in the projected upside in the stock and their business. Crypto wasn't 3/4 of their business, or the last quarter results would have shown that type of destruction.
Your $20-$30 share price would peg them at a $12 to $18 billion market cap. They could justify that with just the earnings from their latest quarter.