Excited that my piece could stimulate this!  Thanks for the detailed response.

> Steem onboards people to Steem

We'll see how it plays out.  I see a rising tide lifting and legitimizing all ships.  It brings more people closer and makes more people feel at ease.  Bitcoin and crypto are just thought of as an inscrutable nexus of nerd scams to most people.  Steem will be a bridge.  And its own thing.

>  In fact onboarding users through Steem may make converting them to Bitcoin even harder. It would be like onboarding someone to a high-speed bullet train and thinking that it would in turn onboard them to old school wood burning steam trains.

This is salient.  Bitcoin makes it hard but robust and perfect.  Steem makes it easy and invisible.  Pretty clear which will attract people more effectively.