Hi Slopoke, welcome to the forms.
I'm guessing you read the whole article you linked, but just to be sure, that article discussed how hard the tester had to push the speakers (using a free-air pink noise test, not real-world audio material) before he destroyed them due to pushing them well past their intended limits with source material that is designed to stress speakers.
Given the goal of the test, I'm not sure it is a good source to quote when comparing it to the topic of normal speaker break in and the resulting changes in audio characteristics under normal listening conditions.
Either way, the article you linked was an interesting read, but I'm not sure it directly applies to speaker break-in.
Jason
