Most parts of the
Philippines have high
homosexual visibility.
The first time I visited the Philippines in 1983, I stayed in a provincial town where I watched a huge gay parade with festively dressed participants marching to band music. In December 1999, during Christmastime, I went with my brother and cousins to see the Miss Gay Malabon 1999 pageant in which male contestants partook in the events of evening wear, talent, and interviews. I've also noticed that gay characters and actors have high billing in many of the Filipino movies I've seen.
It is not necessarily true that there are more gay Asians than those of any other ethnicity. Cultural differences have a lot to do with people being out.