some stablecoin are being used by some marketplaces where users can use USDT or USDC.
There is no stable coin in this world based on facts. The dolar loses so do stablecoins. Swaping Stanbelcoins cost money (fees) so were is that stable. Their algos have been seen bleeding when Luna crashed.
And no I'n not stalking you even though it's the 3rd post I answer and quote you. I hope you can forgive.
In life nothing is stable because even the stablecoins aren't stable when the economy got on them changing their instabilities from one form to another, nit to talk of cryptocurrency where the whole thing there were unstable as well, being volatile as meant, this is what we should first considers, what are the factors that affects a currency stability, in case of USDT pegged with USD, not to even start going deep now into litecoin itself in details which is another talk to some other time.