The people selling based off of tweetstorms or breaking news are not mom and pop investors saving for retirement. They’re day traders trying to squeeze profit out of fluctuations.

It's also possible in the last few days people sold shares at the discounted price, who were saving for retirement and other things.

Timing the market is impossible, besides selling now would be a good thing if they bought the stock at any point more than 1 month ago. Go look at the stock chart.