Earlier quoted context omitted.
Women can't use another proxy to signal financial security, like the dollar amount in a bank account, or a house down-payment, or a secure job? Women can't talk for themselves? Do women still want a man who is financially secure? What about independent women? How many women have posted in this thread (compared to HN's overall male-female posting ratio)?
How do you signal the value of your bank account besides using it to buy expensive things? (And this is certainly not a gender-specific problem: consider sports cars, gold chains, or bottle service at clubs)
I understand the point you're making -- the value of expensive things in signaling to someone you don't know. I can't see the point in marrying someone if I couldn't trust them with my bank account.
Edit: I'm realizing that this is entirely from my perspective. How does a woman without earning potential display her husband's wealth to her family and friends? She asks him to buy her an ornament to prove how much he values her. This puts the man above the woman, inequalizing them.
Is there any custom where a bride and groom exchange gifts of equal value?