The writer trying to make a comparison aside. I think that's the general jist I've seen from multiple sources. Slavs/Serbs show up in the general area in the fifth century, get into their current spot in the 7th, conquer Kosovo in 12th, lose it in the 15th to the Ottomans, conquer it again in the 20th century through Yugoslavia, lose it again in the 21st century.

I would think the "cradle" of the Serbs would actually be Lusatia(in germany), Thessaly(greece), or maybe Smederevo.

Um what? Just get to your point.