It's really quite simple - "What about Men and Woman" - it's all about the money. Gone are the days of the "romantics" true love is a fallacy - the proof is in our "Divorce Rates".
I wouldn't blame a women (or a man for that matter) for chasing the money. Thai Woman and Western Man - western men have more money - simple as that. Same goes for "illegal immigration". I'm American - if I could earn 5-10 times my salary by sneaking into Canada and working illegally, well, guess where I'd be.
I'll be damned if I judge a Thai girl/woman/bargirl/masseuse for chasing the money and bettering their (and possibly their families) lives by deciding to "employ" themselves at the high paying job of being a westerners "Mrs."
Hell, I expect there are many Thai females who wish they had the ways or means to attract a rich falang husband but fall short.
Welcome to today's real world where a person is judged solely by the balance of their checkbook, not by what's in their hearts and/or mind.