"Does this person not realize that wikipedia is also run on a web server."
The difference is that you don't have to run your own server to edit or otherwise participate in Wikipedia. You don't need your own server to have a blog on Tumblr or WordPress.com.
And since Simplest Federated Wiki requires either Ruby/Sinatra or Node.js/Express, you need more than just a shared hosting account to run it, which raises the barrier to entry (though the one-click installer, or PaaS providers, help lower it again).
It may eventually be a non-issue if someone builds a "wordpress.com for federated wikis."
The difference is that you don't have to run your own server to edit or otherwise participate in Wikipedia. You don't need your own server to have a blog on Tumblr or WordPress.com.
And since Simplest Federated Wiki requires either Ruby/Sinatra or Node.js/Express, you need more than just a shared hosting account to run it, which raises the barrier to entry (though the one-click installer, or PaaS providers, help lower it again).
It may eventually be a non-issue if someone builds a "wordpress.com for federated wikis."