There are no scientific advances in Western Europe during the early Middle Ages, i.e. between 500AD to 1000AD, just a 'mere' 500+ years... This is actually acknowledged by the writer of the article. Things get somewhat better in the 2nd part of the Middle Ages leading to the Renaissance. So roughly 1000AD-1500AD. The earliest references from the author are in 12th century. Such an intellectually dishonest title.
There's a weird kind of historic revisionism that's been going on the last couple years regarding the Medieval period...the "things weren't all that bad" and "the notion that nothing happened is just a myth". Is it real? Are we just now learning about advanced and invention that happened during this period and were previously ignoring/ignorant of? Maybe. But I suspect something else is at play here, I'm just not sure…
http://www.amazon.com/Timeline-Michael-Crichton/dp/034541762...
And I doubt he came up with the idea. I also think I heard that this debate has been going on in medieval scholarship for a while.
That said, the debate is unlikely to be a strawman that glosses over the very real collapse in certain types of knowledge. I doubt the scholarly debate explains whatever is currently happening on the popular level.