> People keep talking about how 'this is a solvency crisis because if SVB had to sell everything today, they wouldn't cover liabilities' when that is the definition of a liquidity crisis.

I don't think that's right. It would be a liquidity crisis if the market value of everything they own is higher than their liabilities but they can't find a buyer at this time. You are saying that a liquidity crisis is when they can find a buyer but everything they have is worth less than their liabilities. That's not the case.