I think your plan to store the assets you have in stablecoins is a very good choice, besides being able to maintain the value of the assets you have for the next stage you can also hold some of your money.
most likely if you save in USDT it will keep your assets intact for years to come.
Stablecoins are another option from fiat currency which can be used immediately when someone wants to trade or shop in any market, and it is only suitable for storage, not for profit when the market starts to improve, so this also needs to be implemented even if only just for a moment.
I think what you say is very true if it is not suitable for profit on stablecoins like USDT.
many people use the option of holding USD only for the purpose of storing the value of the assets they have when market conditions are not favorable, by storing them in stablecoins their money is intact and they can reuse it when they want.