To be fair (but not too much), the devs did compress and minify their JS and host everything on the same domain, so with HTTP/2 the network impact should not be too high in comparison.
In comparison to a "normal" web page that loads 213KiB of script that's not necessary because the HTML already shows the big zero regardless. At least the CSS is fairly minimal.
The web is a terrible place. Google should rank Javascriptless websites higher in search results to push for less scripting, it's the only way I can see this situation improving.
