Ptolomaic egypt from a greek view

[MButcher]

The short answer is yes, they were considered Greco-Macedonian.

There was no monolithic "them" in Ptolemaic Egypt, because it was EXTREMELY diverse. There were Greeks, Macedonians, Galatians, Judeans, Syrians, Arabs, Nubians, Ethiopians, Libyans, Thracians and of course the Egyptians themselves.

Even if certain sections of the populace were not Greco-Macedonian, they faced great pressure to Hellenize. If you were an Egyptian it was (almost certainly) impossible to advance in society unless you Hellenized, or at the very least spoke Greek. (We have an example in the papyri of an Arab complaining to his boss of being ill-treated because he didn't speak Greek.)

When it comes to the low-level Greeks and Macedonians in Egypt, assimilation into Egyptian culture took hundreds of years, and even then it was never complete. Mostly they adopted Egyptian religion (a.k.a. the popularity of Serapis and Isis). We almost never hear of a Greek learning Egyptian (there was one example, but it had an economic incentive). A few Egyptian specialties, such as dream interpretation and medical practices were certainly adopted, but the assimilation was never to the extent that an outsider would say they weren't Greek.

For the Ptolemaic kings, assimilation was a matter of public relations. This took the form of setting up stelae, being generous with the priesthoods and, yes, sibling marriage. They portrayed themselves as Egyptians to the Egyptians and Greco-Macedonians to everyone else.