I would say that by default Nobility is an extremely conservative class, so if this is being considered by at least some members of the nobility, maybe the actual support inside the general population isn't so little as we think.
In fact Dana say "No reputable noble" as if nobility was the only category worth considering. Only after he mentioned changing the cultural aspects of the masses, but Dana was shown, as all the nobles, to be quite detached from the actual mindset and modus vivendi of the commoner population. (and not only that, considering how his action affected that girl chapters back)
It's also contradictory when mentioning the "leading by example", but how can an influencial person lead by example if it's not legal?
Dana isn't proposing a way to make change. He mention a world where productive forces won't be bound by population size, but even he realized that it's far fetched into the future. It's also hoping the situation would resolve itself with no external interventions from the authority.
The only good suggestion was about the importance on improving women economic capabilities but even that, while important, is a tangent problem.
