stablecoins mimic the value of fiat using cryptography. you get the same basic scam but you take more risk.

usdt is widely used. the criminals try to destroy it.

not easily possible because they are based in hongkong.

usdc is based in the usa. it is smaller than usdt. they will probably destroy it when they issue their central bankster slave coin.

fiat will go to zero. it will take a longer time

stablecoins will go to zero faster