The article does identify that there is commercial paracord and then there is mil spec "Mil-C-5040" cord. A problem with commercial grade is that there are varying degrees of quality, as the article mentioned. You have to trust the particular brand name. If the commercial paracord is being manufactured in China, then you just have to get lucky to get high quality cord.

In contrast, cord that is labeled "Mil-C-5040" is manufactured to military specifications every time. I personally don't mind paying twice as much to have this peace of mind. If I do use paracord, it's only for occasional important stuff, and so the extra cost is an occasional expense. For example, I have unused paracord in my survival kit for real emergencies. If I have a less critical application, I use boot laces or cheap rope from the hardware store. For example, I use boot laces to practice knot tying.

Here's an example of Mil-C-5040 cord (no affiliation):
http://www.adventuresurvivalequipment.com/survival-accessories/survival-parachute-cord.html