It is interesting historical information. Except for the introductory statement "Which contradicts the whole idea of an engagement ring" which essentially asserts an expectation that we should accept this historical practice as the correct basis of laws today.
I'm currently 53. When I was 19 or 20, I had a college classmate in her 70s iirc who talked about legally needing her husband's written permission to even get a job when she was in her twenties. This was the degree to which women were treated as property. So, yes, around 80 years ago, marrying well was just about the only hope of financial solvency a woman had.
I'm a former homemaker. I raised two special needs kids and followed my husband's military career around the world. Between that and a serious medical crisis, I've been really dirt poor for years and spent some years homeless.
So I think quite a lot about the degree to which society and husbands really ought to compensate women more for their labor and personal sacrifices in raising kids and supporting male careers at the expense of their own.
But policies are always two edged swords. Given how incredibly poor I have been, I am incredibly leery of the existence of actual laws still on the books that are rooted in the historical artifact of treating women literally as property of their husbands, even if that law is supposedly in the interest of the woman who is otherwise expected to accept being treated as a man's possession.
I have worked hard to try to find my voice in a world that is often openly hostile towards a former homemaker and her views being treated like a real person. I get crapped on a lot by self-proclaimed feminists who are often childless career women who seem to not actually be happy with their lives and are taking it out on me for various reasons.
The world needs very much to find a way to help people both stay home to care for children when that is the right answer for the family and also help them get a real career afterwards when that time has passed. The law in question is part of the manacles that keep women oppressed and poverty-stricken.
Please note I was careful to not attack the GGP. I just commented that it made me feel better about a detail of my life that I occasionally lament as evidence of a lack of "romance" in my life. I had something better than romance. I had a husband who genuinely cared about my welfare, something that is typically lacking in marriages based on the idea that he basically bought her because he has money, even if it isn't as explicit as such arrangements once commonly were.
The engagement ring laws cited are part of a polite form of selling oneself into slavery. It should be ancient history, but in 49 states, it is still the law.