Ahavben,
We don’t agree that it is much worse, we agree it is worse. I disagree on the “much.” The point of not writing the kesuba is that at least they realize that it is not something that they should be proud of. By analogy a murderer who boasts about his murder is worse than one who tries to hide it, but the boasting isn’t remotely comparable to the horrendous nature of the murder.
Kozov,
Is that statement by Rav Yehuda Hachasid brought down l’halacha? Does he mean a public macha or does he mean speaking to someone in private in a way in which he will listen like we understand “hochaich tochiach? Is he speaking about what one should do in golus or what one should do in Eretz Yisrael when it is under Jewish control?
Most importantly, I have the same kasha on Rav Yehuda Hachasid as I had whomever originally made the argument from Yonah. Why do we only find this by Yonah? The non-Jewish world has been violating the 7 mitzvos as long as the mitzvos have been around and we don’t find any common practice of protesting these actions.
As for our brethren not raised with Torah and Mitzvos, the best way to influence them is by example and outreach, not by shouting at the goyim.