Some people boasted about 10,000 people using Steemit but, judging by the pending payouts, almost all the activity is $0 / "freemium users". Getting a force of 10,000 out is sizeable in the crypto but it makes it nowhere as popular as Bitcointalk dotorg and isn't indicative of viral adoption.
As I've said before - Reddit clones have been tried a dozen times before and none end up viral.
You must be high or retarded if you think the hard data recorded on an immutable block chain is not indicative of viral growth:
https://steemle.com/charts.php