What is the downside of USDC?

Could you elaborate on the potential drawbacks of USDC? I'm interested in understanding its limitations, especially in terms of market volatility, regulatory uncertainty, and any technological vulnerabilities it may possess. Is there a risk of its peg to the US dollar being disrupted? Are there concerns about its liquidity or the speed of transactions? Additionally, how does it compare to other stablecoins in the market, and what are the specific challenges it faces in gaining wider acceptance?