Azoi.is, I read Mrs. Richard’s letter. As far as your snip from point 2, she clearly talks about preparing boys to shoulder their responsibilities in life.
I do disagree with her last point, in which she mentions that parents care for their boys till then, why not a few more years. On one hand, I appreciate any efforts to alleviate the girls’ parents burden; OTOH, who’s to say that either side has the money? Many girls are working, paying for some of their expenses and floating their own student loans. While this may not be feasible for the boys, I honestly wonder how many parents can keep their boys afloat another 3, 5, 10 years, while still paying full or close to it tuition for their younger ones and fulfilling all their other obligations.