The same factories that made the current battery that is a fire risk. yes. or maybe different ones, with no vetting for how dangerous their batteries are.
Yes, in all likelihood the same factories. Which still make your choices a battery that needs replacing but can't be without voiding your warranty, or a battery that needs replacing that you can swap out easily. Am I missing something?
Because a deep-pocketed company can be sued to recover the cost of my house - Samsung, Google, or Apple, and they take all possible precautions to make sure this isn't needed. Not going to successfully sue "big luck bright shine battery company of shenzhen"