For what it's worth, the site aside from the trends page is mobile friendly. The trends pages are something I thought would be cool to throw together with the data I have on the topic and admittedly haven't spent enough time trying to make sure it works everywhere.
Apparently,the experience is unusable or terrible in Safari for iOS and Chrome for Android also, but I too came here to complain about it being completely unusable on Firefox Mobile. Hello, fellow Firefox Mobile user!
edit: should be fixed now