I think that the RC (Resource Credits) are not only discouraging the spammers, but also discouraging the real interaction. The real, human comments.
I think everyone (or at least most of us) know that commenting are also costs RC (Resource Credits).
EDITING your comments are also costs RC (Resource Credits).
Since the initiation of HardFork 20, I noticed the fact that not only the amount of spam (and spam-like) comments are decreased, but the real comments as well.
I rarely receive real, human comments nowadays, and I am not alone.
Some people can't even comment (or they can comment only a few times per day), because the RC (Resource Credits) we have are based on how much Steem Power we have.
Steemit currently does not feel like a social network.
I think that the RC (Resource Credits) cost of commenting should be reduced.
There should be a balance between these things.
Honest engagement (commenting) should not be discouraged.
What do you think?