That's true. In this graph "active" are those who made at least one post, comment or upvote.
Also interesting in that context the forecast from Steem 'data enthusiast' @paulag:
If the number of new accounts remains consistent for 2018, so at about 150K per month, within 7 months we will have 1m new users. With a retention rate of lets say 10%, within 12 months we would see a total active user base of 250K people.
From my point of view, instead of thinking about more growth ideas, we should rather work on strategies to keep people on the platform.
RE: 10 Ways to Fund a Steem Growth Project!