I am astonished if that is true. For many years, the Czech Republic offered cheap living and cheap sex....I appreciate that things have changed. And there's Hungary and Romania, too. So why Thailand?
My experience in Thailand over the past twenty years is very different. Most of us travel (or emigrate) because we are attracted to the particular qualities of Thai and Asian men. The Russians look much the same to me as white Britons. The only difference is that they don't speak English and are (I assume) cheaper.

I recommend Daniel Gawthrop's "The Rice Queen Diaries" (not to be confused with the now-defunct blog), which identifies eloquently the qualities of Thai males.