One should be at the bottom one at the top. I understand space on the phone is a premium but a second port would make the phone so much more usable. Wired headphones, flash drives, camera modules, speaker modules, keyboards, even connection to a TV, all could be used while charging. It’s a shame it’s not a thing, USB is extremely versatile port, but you only get one and it’s used for charging half of the time. (I am aware dongles exist)
If this is anything like the first EU decision and how it is worded, people are vastly overstating what it actually means. The important part about that one decision is that devices with water protection should only be serviceable by certified professionals, which should include the manufacturer’s repairmen and third parties, but not the end user. On the removable batteries part, having pull tabs already suffice the requirements, the batteries just can’t be glued down requiring alcohol or other prying methods to remove.
The devil is in the details
The bit you’ve referring to was about devices designed FOR use underwater. Not devices that can operate under water. The OEMs will try and interpret it as you said and will end up getting fined.
That’s fine, third party repair is good enough for me. Right now third parties can’t even do battery swaps because Apple signs batteries to the phone and you lose features without that signature.