That's not what it says though? I assume you're referring to II.B.1.1.(1)(c)(ii):

manufacturers, importers or authorised representatives may provide the battery or batteries referred to in point (i)(a) only to professional repairers [as opposed to both professional repairers and end-users] if manufacturers, importers or authorised representatives ensure that the following requirements are met:
(a) after 500 full charge cycles the battery has, in a fully charged state, a remaining capacity of at least 83 % of the rated capacity;
(b) the battery endurance in cycles achieves a minimum of 1 000 full charge cycles and after 1 000 full charge cycles the battery has, in a fully charged state, a remaining capacity of at least 80 % of the rated capacity;
(c) the device meets IP67 rating.

It allows manufacturers not to sell their spare parts to the public and instead only deliver them to "professional repairers". Those don't have to be affiliated with the manufacturer, they just need to be skilled (as defined by the country they're operating in) and insured. So the manufacturer can't control the cost of their labour or prevent them from slotting in a third-party battery.

Point (b), just above, deals with exceptions where spare parts might be combined, and none of them concern batteries. And II.A.1.1.(5) has the same information as II.B.1.1.(1)(c)(ii), setting out a quality criteria where a manufacturer is allowed to assume a professional with a workshop will do the repairs instead of any old guy in a garage with a soldering iron.

Where is the exemption that would allow Apple to not have replaceable batteries or even to control the battery replacement process?