It is currently 2016. Most people (including myself) use smartphones. Unfortunately, this website does not feature mobile support, which is quite unhandy. I would assume (and I'm only making an assumption) that it would be fairly easy to make a website mobile-friendly, but then, I only know basic HTML I learnt in secondary school, so I wouldn't know much.
If you know basic HTML, then you probably won't find it too much harder to learn basic PHP templating. Grab you a copy of phpBB, install it on a cheap personal account someplace, learn how to modify the template, then design a nice mobile-friendly version of the site, package it up and send it to Owen. You'll have saved him a ton of time and it could be installed as an additional theme for anybody who wants to use it.