Why the dishonest weasel phrasing?
If EU bureaucrats can design a better phone, well... why don't they?
It's one of the easier things to fix. I could swap a phone battery easier than I could replace my door handle or repair clothing.
But that doesn't mean that repairs/replacements need to be limited to something a random user can do without tools or at least with tools they're likely to have laying around their house. I've replaced batteries and had batteries replaced in my MacBooks a few times and it hasn't been an unreasonably difficult or expensive process.
I've had laptops with batteries you could pop out but they were relatively heavy compared to today's norms.
(Much as I love a good locking mechanism and a rubber seal, I can see it making the phone a little thicker than it would be was the battery non-removable.)
The advertised water resistance is only for the original battery, case unopened.
GPSers and FRS radios have done this for a long time. cell phones did this until later in the "slim is in " marketing campaign.
I'm guessing that most owners of waterproof handheld radios are more 'handy' than the general population.
they can vary from self destruct, to immortal service life depending on material, and use.
(With today's rubber being what it is, I guess I could safely at least double that interval - but it only takes a few minutes, and the vaseline is effectively free, so...
My DSLR is water resistant, despite having multiple ports, moving parts, and a removable lens.