The fact that I, you, or people you know have a good marriage doesn’t change the fact that heterosexual marriage as an institution has been hugely destructive to women and has been used to undermine our personhood.
I think you’re misunderstanding the phrase “Good women have been lost to marriage” as meaning “marriage makes women less worthy/good.” Why do you think the comparison is to war, famine, disease, and disaster? None of those misfortunes make a woman less worthy, but they do harm, traumatize, and kill her as though she is worth nothing. Marriage does the same for far too many women. I’d eat my keyboard before I deny the experiences of those women just because they don’t match my own.
Besides, my own marriage very much goes against patriarchal norms and that’s a big reason it works for us (link). Marriage can be improved and made more humane, but that won’t happen by denying its problems.