Please answer a question about the following article about Hellenistic period:

The focus on the Hellenistic period over the course of the 19th century by scholars and historians has led to an issue common to the study of historical periods; historians see the period of focus as a mirror of the period in which they are living. Many 19th century scholars contended that the Hellenistic period represented a cultural decline from the brilliance of classical Greece. Though this comparison is now seen as unfair and meaningless, it has been noted that even commentators of the time saw the end of a cultural era which could not be matched again. This may be inextricably linked with the nature of government. It has been noted by Herodotus that after the establishment of the Athenian democracy:

What century of scholars considered the Hellenistic period a decline in culture from classic Greece?
19th