if its bannable by a centralized place please explain how it is decentral? i thought that was the kind of controls a decentral system was specifically designed against. is that understanding of mine flawed?

Your thinking is not flawed. It's just not decentralized.

Decentralized cryptocurrency is an ideal from early 2008's from the Bitcoin supporters. It's not the reality of cryptocurrency in general.

Cryptocurrencies are full of contraditory ideas between the founding ideology and the actual usage.