So shadowban them instead. The kind of people who would allow their system to be compromised are not the kind of people who would care or notice if their +1's didn't count.
I don't believe you're serious. Not only is that untrue (practically everyone is insecure in some way) but it's also a non sequitur; it's not the +1ers that suffer when their clicks don't count, it's their friends, who would otherwise benefit from having better recommendations.
