Bitcoin can never be the stable coin because it use to change the price sometimes it can be high or now, whole market is about the price of bitcoin so if price of bitcoin changes it use to move whole market price, stability of bitcoin is not possible for me, we will be able to see bitcoin the most unstable coin of the market.
Considering the current bear market end and the slight bull market rise the overall volatility is much lower. Bitcoin is not backed by anything to make its value stable and pegged to that asset. Its backed by the community support and the belief that people have in it. So its not something we can consider as stablecoin.
Most stablecoins are scams though. There is no difference between USDT and fiat USD. If fiat USD is considered as a the biggest scam in the world then the same would be true for tether. Rest what to do with them is your choice.