It's just a big faux pas in this day and age of environmental consciousness really. In my country we used to joke that people would buy a new car because the ashtray was full. This reminds me of that.
I am restraining myself from mocking this idea of pollution from discarded smart rings. It takes some effort, but I'm being very mature and saying nothing.
I don't really care about the environmental consciousness, my issue is that presenting a product with a battery that lasts for years when it actually lasts 15 to 20 hours makes me feel like I'm being lied to.