If you read the article you'd see that Apple will not sell you a battery. They will ONLY sell you a "Top case with battery and keyboard" which requires removing every single part of the laptop in order to replace. This is more invasive, more expensive, and less approachable from a repair standpoint if you go with their process.
That doesn't make the laptop less repairable than it was before they launched this program, though, which is what the headline claims.
It's less repairable than a hypothetical version of the repair program which sells you just the component you need to replace, sure, but you can still perform any-and-all actions that you'd have taken to replace a battery before Apple's official program existed.
>If you read the article you'd see that Apple will not sell you a battery.
YET. The manual and the article itself acknowledge that this repair is only possible with a top case replacement and that battery-only parts will be available soon.