i mean, the article is about how we in the US focus exclusively on helmets as a silver bullet for bike safety. they’re not as effective as people in the US make them out to be, even though they are effective in some situations.

Would I be supposed to leave it hanging from my bike, exposed to the rain and theft? Or carry it with me into the shops and bars and keep an eye on it?

don’t worry, nobody in the US has solved that problem either. some people leave it on their handlebars, others put it in their backfit, others stow it away in a bag and carry it with them.