He's talking about installing the web server, not deploying the application.

Deploying an application can be done with 1-3 commands in any language, since it has little to do with the language itself. All you need is a build or deployment script, which can be written in Bash or whatever.

I realize, but that too is a constant per platform. It's about the same amount of effort per web server per ecosystem, since in our we case we reverse proxy to the application server.

If we're talking about shared hosting, that's a whole different ball game.