It's obvious that a static HTML page will render faster than one dynamically generated from JSON data. But now the site looks massively more annoying to maintain since any change in how the data is presented will need to be made in 30+ places. And even adding a single library will involve HTML coding.

tomdale started a project in a framework he's comfortable in and said he plans to iterate on the site. Who cares if it's a little slow? It's a dick move to copy the source from Firebug and file a pull request.

This pull request doesn't genuinely help the project.