No, please have in mind that these guys here simply aren't able to write (correct) documentation. And they also don't care when they publish something confusing or misleading or even wrong. They don't care. It should be obvious.
If you want to replace the DC-IN connector just do it, if you want to bypass the PMIC (not recommended) you need to do the other modifications. Maybe this thread helps finding the right part: http://forum.banana-pi.org/t/what-is-the-part-number-and-manufacturer-to-replace-the-micro-usb-jack/1243 (no idea, I've given up long time ago given that we receive zero help from @sinovoip)