Some posts do but then I mean a lot of posts you can look at and around 60%-80% (sometimes 100%) of the replies are spam and since the number of spam comments on any post averages to around 4-10 (author depending) it shows that there isn't enough engagement.

What I would like to see is 2-3 real comments (at least) for every spam comment on the good posts and for the posts that need more work and aren't quite there to get at least 1-2 real comments for every spam comment, even if the real comments are suggestions on what could be done better or something. I mean its a two sided coin as well because authors need to also try to find ways to actively encourage engagement but that encouraging engagement means nothing is only 4 people actually read the post with 1 of them being the author, 2 of them being curators and the 4th being some random kid going through steemit to see why the post got voted to $40 and how they could get those votes.