Pages like this are why I love Firefox reader mode. It doesn't matter what font crimes the author commits, with a single click it becomes legible again! Good content should never be missed because of an author trying to stab you in the eyeballs.
Pro tip for web designers out there: if someone wants a narrow layout they can always make their browser window smaller, but if you force it to be narrow that screws over the users who find that unpleasant. A wider layout can thus work for both types of reader, while a narrow layout only works for one.