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It's official: Smartphones will need to have replaceable batteries by 2027
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
this is straight-up BS. there were many phones with ip68 and user-replacable batteries back when sealing the battery in a phone was frowned upon. not all but many.
I had a Galaxy S5 which I think was IP67 (someone fact check me on that), and a removable battery. It definitely didn't have a premium feel, and it got eviscerated in reviews for that. That didn't bother me though. Though, the backing cracked and the little plastic clips broke off rather quickly. I think if they had a metal backing that was held on by a regular (albeit tiny) Philips head screw(s), they could have a user replaceable battery on a premium phone with IP68 no problem.
According to wiki, you remembered right!
https://en.wikipedia.org/wiki/Samsung_Galaxy_S5