Yeah, owner of that site is quite pessimistic (even alarmist, one might say) about what goes on in the world. Still, it doesn't hurt to at least think about this kind of danger and how to face/avoid it. As for risks like heart diseases or car accidents, most people are aware of guidelines to avoid them, or at least minimize risks (healthy lifestyle, research into weaknesses running in one's own family, driving carefully or using alternate means of transportation, etc.), even if many do not follow them out of laziness or convenience.
Like I said, the site needs to be taken with a grain of salt, but there are some hidden gems there.
