Earlier quoted context omitted.
162 pages indicates that the item was not made to be repaired or replaced. 162 pages indicates that you're going to have to work around Apple's repair-hostile design to do a repair.
I definitely agree with you there. But the headline says it makes it "less repairable." If your car manufacturers changes all the bolts on your tires to use specialized tools and require you to read a book to understand it that makes your car less repairable. If they provide those tools and manual that doesn't make your car less repairable than it already was. My point is the title of this makes no sense.
https://www.youtube.com/watch?v=S2xHZPH5Sng
But on topic, Apple's official stance, as provided by this repair manual, is that replacing a battery requires you to replace vast portions of the final product.
Car analogy time: Got bad seals on your block? Send us the engine; who knows what kind of damage those bad seals have done. Oh, and only we, your car manufacturer can get you the tools and an authorized engine replacement.
Can the battery be replaced without the assembly? iFixit says yes. Is this how Apple does it? Sure, but it's generating a lot of cost and waste. They can write both of. Can you?