I would actually think the opposite: if you're a buffer employee right now, you know a) the company will continue to exist b) that you're a valuable asset to the company and c) that your founders walk the walk when it comes to transparency and information sharing.
I'd assume a few people will leave for better offers in the next few weeks, but this seems to prove that the founders are dedicated to the company and can learn from mistakes - hardly the prompt for a mass exodus.
Not only that, but the founders themselves took a 40% pay cut each for the next year. That says to me that they value their employees enough that they chose that route rather than lay off an additional person. It's a strong gesture.
Except it seems as though they all signed up to be at a company that was transparent and practiced a certain way of doing business (and actually pushes it as one of the great reasons to work there) and then you find out it was all a lie and that management was hiding information from you as suited them. By their own admission the layoffs came out of the blue to staff despite the fact that they were deliberating on it for a while.
If they practiced what they preached they would have laid it all out early. Some people may have had other opportunities and left, others might have said that they would take a paycut for the greater good, etc.
What this may mean, is that some staff members think that the company isn't actually what it says it is, isn't genuine in its approach, and that they can't trust it to live up to it's values when the going does get tough.
I'd assume a few people will leave for better offers in the next few weeks, but this seems to prove that the founders are dedicated to the company and can learn from mistakes - hardly the prompt for a mass exodus.