We're really focused on improving the on-boarding process for users who are new to the Blockstack ecosystem so it only takes on a few seconds for users to get started with a Blockstack app instead of immediately asking users to download and install the Blockstack Browser.
There's two separate things: demonstrating, and onboarding.
Installing Haskell for development takes a few minutes. But you don't need to do that to see how Haskell works, you can just use the interactive prompt on the website: https://www.haskell.org/
My point in your case, is to suggest the idea of an in browser blockstack/Documents demo. It wouldn't get you the decentralised guarantees that you get with the proper blockstack browser, but might give people a taste enough to be interested. Could be a lot of engineering effort though!
We're really focused on improving the on-boarding process for users who are new to the Blockstack ecosystem so it only takes on a few seconds for users to get started with a Blockstack app instead of immediately asking users to download and install the Blockstack Browser.
There's a bit of a discussion about how this will work on mobile here: https://forum.blockstack.org/t/blockstack-mobile-plans/3621/...
We want to really reduce the friction of on-boarding new users to amazing apps like Graphite.