These women may very well have been forced, but if they are okay with these marriages, what’s the issue? Is it that guys can demand younger women and get away with it? Well DUH! A big part of a woman’s appeal to a guy is her looks, which obviously peak very early. Men on the other hand, if they keep themselves in shape as they age, get more mature, make more money, and are overall more attractive. Younger women have all the power in terms of attraction. Older men have more power. That’s how it has always worked.
And this is not amongst desis, this is in the West as well. Women who hold out for “the one”, or play the field in their 20’s and 30’s like men, often regret being unable to find a guy when they’re older. Men their age can find an attractive woman who is younger. I think the situation is a curbed a bit amongst desis since dating and sleeping around is taboo, but the point remains: older men often have younger women willing to be with them, while older women do not have this luxury, thus the dating pool is much smaller.