I wouldn’t worry too much about falling stock market value/volume due to people tapping into 401K’s to pay bills. That’s not something that will translate immediately into stock prices because people are really only borrowing on the value of the stocks in their retirement accounts rather than actually selling the stocks in them.
I’d start worrying when these savers turn 70 1/2 and are forced by law to start withdrawing income. THEN they will HAVE to sell stocks to get their annuized incomes. That’s when stock values will start to go down. There will be more people withdrawing from stocks than will be buying into them (due to the larger retired vs. working population).
Nothing to worry about this year. In 9 years, however….