That is very true, spamming garbage across multiple chains would be a negative. This is were a better (and fairly balanced) self-governance system becomes important. Where flags adding up over time from the community can hurt a spammers's rep, which reduces rewards share over time to disincentivize that behavior, but maybe cannot be used to destroy accounts and rewards out-right like we see here on Steemit now just because a person disagrees with someone else's opinions.

It's definitely a thin line to walk, but hopefully others with the ability and capabilities to do so will figure it out. :-)

I appreciate your feedback.