How would non-Europeans and non-Westerners feel after reading what Josiah Strong wrote?

They would conclude that he was a racist. He talked disparagingly of other races. He did not believe any human being on the planet earth has equity and equality as the Superior Anglo-Saxon. He believed that the Anglo-Saxon race was the most superior, and will continue to exist unchallenged, while all other races will go into extinction, if certain measures were not taken.

Since he feels prejudice against all other races of different skin color, and believed the Anglo-Saxon was the most superior, these were racist remarks.