I just use Subreply on my phone, and the user interface is more confusing that Twitter's. Subreply could have had a chance if Lucian changed it a while back when it was brought up by several users, but Lucian liked the way it was. I am curious if Subreply could scale though. I think the ship has sailed to Mastadon instances. At this point, Subreply would have to do something that Mastadon does not deliver on, that people want.