fully decentralized means anyone can mine. check for bsv.
Decentralization is so much more than whether or not you can mine it.
immutable blockchain means it's hard to do 51% attack. that hasn't happened to bsv in the last few months has it?
Wrong. Immutability means the blockchain is not going to change. They have already rolled back some blocks at least once which means BSV blockchain has not been immutable ever since then.
This is also the indication of how centralized BSV and its mining is.
censorship resistant means the following: "Censorship resistance refers to the idea that no party can prevent anyone from participating in a given platform or network". I think bsv meets that definition. as do almost all cryptocurrencies I am aware of.
Wrong. BSV was built on the idea that users do not need to and must not run full nodes. This means the node will be and should be run by centralized companies that can decide which transaction to relay and which one to reject, ie. to censor.