Compared to the U.S., anti-Asian sentiment is actually worse in Canada and Australia right now by some objective measures, according to a talk I attended yesterday by Dr. Russell Jeung (Asian-American Studies). He didn't mention the U.K.

That said, it makes sense that someone from a city-state that was formerly part of the british commonwealth would want to move (back) to the commonwealth.

One example: the higher education systems within the commonwealth are more interlinked and university degrees more widely recognised across borders. I'm sure there are many more benefits as well.