They have in the past and then they decided, no, let's say it's too difficult and use it as one of the excuses to guarantee limited lifetime of a product.
Yeah that was honestly my only concern with this. That and durability. But it doesn't really seem like a problem. Replaceable batteries also means replaceable back glass (or screen?) So that's awesome.
I don't say I would need it, but that's not an excuse to not have replaceable battery. A so called waterproof sticker is $0.05.
So, it could be sold with the new battery.
I personally have been bringing my phone in the shower for years. It also gives me peace of mind when I'm doing outdoor activities around water.
I remember once I had my phone in my pocket at a party before they were water resistant and I got knocked into the pool. Would have been all set if that phone had water resistance.
Yeah generally I just finish what I was reading while I let the water warm me up. Then put my phone down and wash up. I suppose I only do this because the phone is water resistant, versus buying a water resistant phone because I need to bring it in the shower.