Accountable to a government body with opaque motives and capture over its citizens. Crypto has inspectable source code and miners and coin holders can jump ship if shenanigans are perceived
I’d elect for a suboptimal government over such mechanisms any day, which seems to be a global consensus when you observe the lack of volatility in reserve currency values.
So if the forked chain becomes accepted, then they have 1000 USD and 1 Eth, while you have 0 dollars and 0 Eth, and you're never going to make the mistake of trusting a cryptocurrency ever again.