Not necessarily. There is nothing much really stopping quantity here, other than the expectation that it gets rewarded. Take away the expectation of reward and there is plenty of room for quantity.

As a platform for sharing what I had for dinner or other everyday life events Facebook totally rocks compared to Steem if there is zero possibility of reward. That's because nearly everyone I know is on Facebook already. If I want to, I can shoot shit with my old friends or connect with relatives there. Facebook also has an UI superior to what any Steem front end has so far.

I'm on Steem because Steem allows me to monetize my photography hobby to an extent would be unlikely to happen on any other platform. Also, there are many people on Steem who are into crypto and have knowledge of it. STEEM is a cryptocurrency and I love stacking it up. If all the rewards went to professional quality content creators or stakeholders at the large Orca/Whale level, I'd spend a lot less time here. I'd delegate to projects and only occasionally drop in to check what was going on.

The user base is a valuable resource to all projects because we're the people who love to jump at every opportunity to test something new. But the thing with the user base is that it is not really a community, at least not for the most part. It's too large and too diverse. The people I interact with here are mostly strangers. I don't mind having conversations with strangers but the fact is that I can find strangers anywhere. I have only a handful of people here with whom I can say I have made a personal connection with. What's keeping the user base together is really the monetary incentives. Steem has a long way to go before real social networks can form on it.