Hey, @paulag.
I'm guess I'm okay with the conclusion that the churn rate is falling, but I'm wondering about the factors involved. Before I get to that, though, I should say, even if it is what I think it is, I'm okay with it to a degree. I think it's a good thing for those of us who are still here. Maybe not so much for the ecosystem.
I guess if we're looking at the churn rate in percentages based on the numbers that were previously coming/leaving versus what they've been up to hard fork 20, I've got to wonder if it's come down because a) there were fewer accounts coming in, so b) they were able to find a community quicker and c) the larger amounts of folks who left because of the decline in STEEM prices basically since April-ish (if memory serves) was the worst of the exodus or churn. Meaning, that those who have stayed have found other reasons for it other than earnings.
I have no data to back that up other than looking at what you've provided. I'm wondering if we haven't just reached that core group of humans (plus bots, apparently) that are going to hang on as long as STEEM is here, while trying to bring the newbies into the fold.