This guy frankly used words like Greeks and Greek Empire to call Byzantines and their state in his work "The Story of Civilization".
>>3259869
Your point being?
>>3259869
Why btfo?
Historiographically you can call it whatever you want. You can call it the Wacky Porphyrogennetos Playhouse if you like. That won't change the fact that when it was actually around it was known as the Roman Empire.
>The Eastern Roman Empire continued on as the Byzantine Empire until 1453 CE, and though known early on as simply `the Roman Empire’, it did not much resemble that entity at all.
http://www.ancient.eu/Roman_Empire/
>they called themselves Romaioi, or Romans. Modern historians agree with them only in part. The term East Rome accurately described the political unit embracing the Eastern provinces of the old Roman Empire until 476, while there were yet two emperors. The same term may even be used until the last half of the 6th century, as long as men continued to act and think according to patterns not unlike those prevailing in an earlier Roman Empire.
>
During those same centuries, nonetheless, there were changes so profound in their cumulative effect that after the 7th century state and society in the East differed markedly from their earlier forms. In an effort to recognize that distinction, historians traditionally have described the medieval empire as Byzantine.
https://www.britannica.com/place/Byzantine-Empire
https://www.britannica.com/place/Roman-Empire