What I find concerning is most people here would have seen expanded seams on a phone or laptop and known about the "puffy" battery within.
The rate of proliferation of gadgets with such batteries is crazy. So much of society already has so many of these little flashpoints in phones, tablets, toothbrushes, kids toys (electric scooter anyone?) - statistically your concerns are already valid without anyone being an electronics hobbyist.
Yeah this is incredibly dangerous. It's not at all like installing a power outlet. You can do that relatively easily and safely. These batteries will catch fire in the middle of the night, burning down apartments and they will kill many people.
I'd be a bit frightened if I knew someone in my apartment building was assembling their own batteries -- poor quality ones can burn down the building.
It's an increasing problem here in San Francisco. I know at least one friend who had to move due to smoke damage caused by a neighbor collecting these batteries. https://sfstandard.com/2024/01/09/san-francisco-e-scooter-bi...