AFAIK, the primary reason Apple and others for avoiding removable batteries was the reputational risk and fire hazard of having customers put fake or damaged ba

AFAIK, the primary reason Apple and others for avoiding removable batteries was the reputational risk and fire hazard of having customers put fake or damaged batteries, because that was long before they started marketing an IP rating. And by the way, the "water proofing" is only 30 minutes with pressure equivalent to 6 meters deep, tested with water nozzles. That's not a lot. Other gadgets that employ gaskets or positive pressure achieve more. I'm sure they can design for the same rating without hurting easier battery replacement ability with the right incentives.