Very well said. The rewarding mechanism of Steem/Hive leads unfortunately to a lot of circlejerk upvoting.
That's not to say that blockchain social media lack content - quality content can be found - but the noise is there as well. And there is a lot of noise.

I also agree with @lucylin that the mainstream users dont necessarily get any benefit from the blockchain of Steem/Hive. Unless one is a political activist or a whistle-blower immutability can become a disadvantage rather than an advantage.