I understand, but that is not a bug. You could call it a design flaw to not have a backup plan for viewers who have javascript disabled, but that is different.

Due to the stats, calculations, it is obvious there is not much to show when javascript is disabled, would have been nice to see a message. They could start with a 'You don't have javascript enabled' page and overwrite that with real content when javascript is enabled. In that case everyone would get meaningful information.

Did you try to contact the owners?