Yes and no. You might not have cash to spare (especially in such a volatile period). Also, investing more might exceed your exposure limit to a single stock/industry.
Sure you should have a diversified portfolio but everything is also on discount. Warren Buffet went on a buying spree. If you don't have cash to spare thinking about investing isn't what you should focus on but instead doing basic financial wellness like having a savings account. Also cash has been outperforming the market so far so cash isn't necessarily a bad investment.
>If you don't have cash to spare thinking about investing isn't what you should focus on but instead doing basic financial wellness like having a savings account.
There are an incredible number of reasons why they might not be able to invest right now so perhaps it isn't the best thing to immediately goto implying they don't even have a savings account.