The past bear market showed that alcoins are falling in price more faster than bitcoin (and even the strongest of them is Ethereum). Therefore, as soon as the market falls, it is necessary to withdraw assets, well, or transfer everything to bitcoin.
you mean to say transfer every thing to Stable coin once the Bear market starts including Bitcoin. We don't want to put your money into some thing that will also loss its monetary value even though you think it will be going more gradually that the alts. I do believe we still have some time for this to happen though hopefully still some time in the fourth quarter 2021.