I would be rather shocked if any regular forum contributors sold out of the market after a 20% plus drop, irrespective of a lack of past experience.
Sure, there will always be a crowd of experts trying to pick the top, but selling post crash from this forum's membership, I'd be surprised!! I doubt we would even see that being a topic of discussion.
I am sure there will be a lot of discussion and speculation on how long the market recovery might take - months, years, decades. But at that point what is there to do but take it on the chin ride it out.
Maybe there will be some doomsayers believing the correction is a forerunner to the end of capitalism. I have difficulty imagining the consequences of such an event so choose to discount its plausibility.