People are so indoctrinated against "censorship" that this reflex can effectively be used as an attack against Bitcoin.

Bitcoin already "censors" certains tx, because of its existing rules. It "censors" double spends or tx that are too big or that create too many new btc. If the majority of node runners decide to change those rules or to not relay those tx, they will no longer be considered valid tx.

Do you or your email client apply any spam filtering on your email inbox? Do you consider that censorship as well? Or do you consider it keeping your inbox clean and usable?

This attack is pushing small users from the network and therefore hurting the early adoption of Bitcoin as money.