I don't think Steem has really demonstrated much clear utility. It has properties which can be useful as you described quite clearly in your "STEEM is not Steemit" post, but its user base has stagnated so it isn't really demonstrating that such utility has much appeal.
I think a better narrative than speculators "fearing" utility is something like earnings reports on stocks. Sometimes the demonstrated utility falls short of expectations and this causes the story to adjust downward and the price falls, but sometimes it exceeds expectations (or points to even greater possibilities), and the price increases. Unfortunately Steem has not really demonstrated the latter.
Obviously, when there is a excess of hype and expectations are 'to the moon', it is more likely that 'earnings' (or demonstrations of utility in the case of blockchains/tokens) will fail to meet them, but the opposite does sometimes happen too.
RE: HF21: What Makes Steem Valuable?