That's to be expected. He was ousted from the company, has no control now so there's little reason why he should be bullish on a stock run by other people. Plus, the future isn't so clear and the markets are at all time highs and he has other company that may require liquidity in the coming years. Better be in cash.
the markets are at all time highs Isn't the world economy built on the idea that markets will always go up? Every year should be an all time high, otherwise we're in recession which is (apparently) tragedy to be avoided at all costs, no?
This is the most hated bull market ever. None of the experts are buying heavily into this market (it's all stock buybacks that's driving this market up).
So, you can see why everyone is uneasy about these extremely high PE ratios.