I think it is a big step for a user to join, firstly the platform itself may be confusing and then the sign up process is... let's be honest not good. Then to top it all off new users are significantly limited in their ability to interact via comments/posts.
Just my thoughts, let's see how it plays out.
Yes, one thing I think doesn't get discussed enough is the learning curve that's asked of newbies. It's discussed as if it's no more investment of time than learning Facebook, but really it's much more, and also far more complicated. So that's one investment asked for in addition that they also buy some STEEM to do well. If there is already one obstacle, may be best to avoid putting up a second.