It's likely to have some sort of effect and there was a short term dip when the news first started to appear. However it's what these banks were actually offering in the background which might be harder to replace. Few "traditional" banks want to go anywhere near cryptocurrency because they've been stung by all sorts of money laundering accusations in the past. Silvergate, more so than SVB, tried to gear up their whole client base around cryptocurrency solutions and it was working in fairness. However they bought a lot of bonds that paid small amounts which means they are much harder to sell when governments are selling new bonds with much higher returns connected to them. Just like the 2008 financial crisis, nobody knows quite if the contagion will spread or where damage will pop up next.