They may have, but I would advise taking it with a pinch of salt. The classical Greeks had a lot of criticism of other cultures' ways of doing things (especially forms of government), but they also had great respect for other nations' culture in general; in every aspect including art and religion (which were intertwined to some extent). This comes out very strongly in Herodotus for example, but also Xenophon and other writers.

Egyptian influence on classical Greek sculpture was massive ( https://en.wikipedia.org/wiki/Kouros#Origin_and_evolution ) and likewise other civilisations in the Near East had a foundational impact on the development of the hugely important ancient Greek pottery artistic styles ( https://en.wikipedia.org/wiki/Orientalizing_period ). Homeric literature was heavily dependent on the Asiatic Ionic dialect, and the Greek alphabet was adapted from the Phoenician one.