Why no panic over those?

Many reasons, IMO. Are you familiar with what I linked to? 50 to 100 million people dying unexpectedly is a big deal. Heart disease and the like are known risks. People make life choices to engage with those risks. This is completely different. If you're comparing linear things to exponential things, you're not quite getting it.

It's possible this is just media hype. It could be media hype 50 times in row. The one time it's not, where people didn't probably prepare and take action, changes our world completely.