Oh so you're saying a central authority can declare your currency worthless at any time? Good to know. Sounds very like a central bank issued currency though?
[1] https://etherscan.io/address/0xdAC17F958D2ee523a220620699459...
One can also burn tokens, just as one can burn cash, but we don't tend to hold that against either systems since it's purely optional.
Any rules can and have been changed by those with leverage to do so (be that exchanges, miners or devs), in the end any system like this storing value is captured and controlled.