Um.

The piece does say that a helmet that has been dropped frequently should be replaced.

I've never replaced a helmet just because I dropped it once. But once a week? What's it worth to you, to be able to walk and feed yourself and communicate with other human beings?

Every time you drop a helmet, you damage it, irreversibly and incrementally. Each individual drop may cause a negligible amount of damage, but it does add up. The piece acknowledges that. I don't think I've ever dropped a helmet more than three times, but if I did, I'd replace it.

Rattling around inside a trunk, getting stuck underneath a bike, all that kind of thing will also damage it incrementally.

Be careful with your helmets. Remember what they're for.