I think it is a function of several things: risk tolerance, age before retirement, and investing confidence. First and perhaps most important is risk tolerance. This helps you to determine your baseline AA (% stocks, bonds, cash) and rules for modification (quarterly, annual rebalancing). When responders say “stay the course”, it may be from a very conservative AA reference point (e.g., 30% stock, 50% bond, 20% cash). They may be very comfortable with this AA, having recent experience in the Covid crash and 2008-2010 mortgage caused debacle. I would bet that very few here are above an overall AA OF 80:20 S:B. I would very interested in their thoughts now, particularly those in or near retirement.
Second is age before retirement. Personally, I am right outside my 5 year window, so I am sitting at 35% cash, and plan to transition +5% per year to my cash (or bond) allocation per year. YMMV depending on when you want to retire.
Some keep several years spending in cash so they can keep a high % in equities/have some dry powder for bargain hunting if the market goes south for a bit.
Third is investing confidence. How many ups and downs have you been through with this AA? How has it worked for you? Is it a SWAN portfolio, or do you need the Pepto?