Stablecoins can be arbitrarily frozen by the companies issuing them. The lack of censorship resistance and decentralization is why I would rather avoid them but unfortunately they are becoming the preferred choice for making payments. Stablecoins are the antithesis for why Bitcoin was created. They may offer convenience, especially for those in countries where their own currency loses a lot of value, but the surveillance, compliance measures, and censorship that come along with it are massive drawbacks. Their adoption should be discouraged more than it is being done.
I want to highlight that there are also some decentralised stable coins out there which are different from USDT or USDC like kind another thing is USDT is not really used for payments rather the preferred trading pair that is the actual purpose why people use it on daily basis as I mentioned earlier in this thread.
It's also bad choice to safeguard from inflation from your local fiat there are better choices out there even if they don't want to invest in crypto due to volatility nature they have assets like gold and silver which will be more suitable as storage of value.