fwiw my best friends are SE Asian (not Chinese), white, black, and Mexican. I didn't feel this photo is as equally representative of that diversity. I'm not making a case it has any obligation to do so, just noting that it impacted my decision to not apply here a while ago.
If it had people of different color of skin but all men, would that bother you (no women)?
Or if it had different color of skin but all of them were Christian? ( no other religions)
Or different color of skin but all Canadians would that bother you? (No other nationalities)
As a European I am much more used to diversity meaning national or religious diversity. Still getting used to this notion of it mainly been used in the context of skin color in US.
