This article is quite ignorant of any history. It might be cool for preschoolers to find flags with similar geometry and colors, but making any conclusions without mentioning the historical context is wrong.

Why would "The Traditional view" be traditional when it represents just a fraction of the relevant history that shaped the culture of European countries? The same goes for "Historical and cultural divide".

Let's take Central Europe as an example - the "Traditional view" was valid for 45 years (during the Cold War) and does not hold for more than 25 years now. The article also dismisses roughly 300 years of the Habsburg Monarchy, 100 years of Austia-Hungary and the years preceding the Cold War.

These lightly ignored years are important when speaking of any cultural divide as tradesmen, craftsmen, students, etc. moved around the empires and exchanged goods and knowledge with each other. Travelling around European towns and villages shows how the builders and craftsmen influenced each other - in regions much larger than the current states.