My issue with Stablecoins are the validity of the statement that $1 = 1 Stablecoin

It is almost impossible to trace the dollars that are supposedly backing the value of the tokens.

I am curious to see some of these so called pegged stable currencies publish their audit report and for the most part USDT finally published a report recently which claims
83.74% of its reserves in cash, cash equivalents, short-term deposits and commercial paper, 4.61% in corporate bonds, 5.27% in secured loans to unaffiliated entities, and 6.38% in other investments including digital tokens but the fact remains that it is not clear how much dollar they pegged and my belief is that majority are commercial papers and cash equivalent.
In the coming years i am expecting the validity of centralized stable currencies will be questioned and it might change the complexion of the overall cryptocurrency market.