Human beings are and should be against exploitation of the weak in any manner.
Isn’t forcing gays into closets a form of exploitation? We are not allowing them dignity.
The parents suffer. This is true. But that is more because of the social stigma.
So the offender is the stigma, not the gay children.
I am strongly against any situation where force or co-ercion is used. But what if the men or women in concern are actually In Love with one another? They deserve a Happy Ending too.

Oscar Wilde and Alfred Douglas : "There is no sin except stupidity." - The Importance of Being Earnest (1895)
I have never met an actual gay couple to my knowledge. I was initially rather shocked to find out that some of my favorite heroes – Oscar Wilde and John Nash – were gay.
Over time, and with age, I begin to think it is prejudice. Just a repetition of the ”Oh! the horror of their ways”!!! theme.