Doesn't matter the ecosystem you look at, there will always be a minority of groups rise to the top and others linger virtually unused. It gives meaning to the cliche, cream rises to the top.
The more content engagement through commenting is encouraged, the more people will consume others posts. Projects like @wil.metcalfe's @comet.ranker and @dreemsteem's @dreemport will also help to bring more content consumers and engagement into the ecosystem.
I've not recently looked at Ecency on the mobile. I'm more likely to prepare and consume content on the computer. Options widen the field for users.