It is impressions that matter more than actual reality to most people, and the demonstration of this is Steem not being more successful than other social media, despite enabling some monetary reward other social media platforms do not.
HF21 not only doesn't acknowledge this fact, it exacerbates the impact of negative impressions, which is why I expect it to be a disaster.
The situation is much more complicated. Facebook has a huge number of groups, many of which are private. There are viable ways of having privacy and stopping trolls hassling you. Steem doesn't have any of that - so that's a deal breaker immediately for a large percentage of the world.
Beyond that, most people don't produce content that is unusual, so would not have much to gain from being here. The problem is partially Steem, partially the funding here, partially the lack of will of the population in general and partially the massive funding of Facebook et al.
There are, surprisingly to me, actually a fairly high number of people who like censorship and want control to be able to silence people. Communities on Steem will help bridge a big gap here and are absolutely fundamental to Steem's success. They should have been THE top priority all along.