Yes. The culture decided it was so, and therefore it was. The majority of the United States seems to think the Bill of Rights is good, and therefore it is. The majority of Europeans seems to think the European Union is good, and therefore it is. Other cultures may not agree, but that doesn't matter.
That doesn’t make it an objective good. Just because the culture at large is under delusions and hysteria does not mean their assessment of reality maps to an objective good
The majority of Nazi Germany thought Nazi literature and art was good. Does that make nazi literature/art objectively good?