Proxima aims to be fully decentralized and permissionless L1 for settlement of crypto assets: fungible (money) and parallelized non-fungible assets (UTXO chains, L2 states etc).
It is money in the same sense as Bitcoin.

Censorship-resistance comes from the liquidity of the token and fully permissionless and decentralized set of token holders (who are also the "validators" of ledger).
If you send your transaction to the network, the only way to stop is >50% of on-chain capital colludes. It is unfeasible. There are no mempools btw.