When the Moody's data became known it was going to happen one way or another. Well over 90% of the accounts were uninsured. Someone was going to pull money. Perfect unanimity in inaction was simply not possible. Given that scenario, it is a rational response to try and be first out the door.
The fault here is with SVB management making some very bad decisions and with VCs not looking at the publicly available data and moving away from SVB a lot sooner. Of course, hindsight is alway's 20/20. Once the Moody's trigger had happened the choices were simple.
