>  What exactly does the 'word' being spread about censorship actually accomplish? Since the majority of hashing power are colluding, they can do whatever they want, and no amount of social engineering will help that.

Without this they can cherry-pick individual transactions to not send, meaning the cost to censor a tx is what you are willing to pay in fees as one person. If you pay 0.1 BTC in fees the miner may have stronger interests than that amount to keep censoring the tx. If you can attach the txs together the cost of censoring one tx becomes amplified by each tx, so instead of losing 0.1 BTC over time miners would be choosing to lose the sum of all attached fees from txs that touch the chain of attachment.