As I was saying earlier, Prudence is the Queen of all the Virtues. Apart from the three theological virtues, the other virtues are not ends in themselves, as are the various actions tied to the virues.
Among the spiritual works of mercy, we find rebuking he sinner. But rebuking a sinner is not an end in itself. What's intended and desired and sought is the conversion of the sinner. Consequently, if in our prudential judgment we determine that the rebuke will do no good, then we are not obliged to rebuke. What's more, if we judge in prudence that the rebuke would cause more harm than good, that the sinner might double down and become even more recalcitrant, then we would be obliged NOT to rebuke the sinner. So we have a situation where the spiritual work of mercy of rebuking the sinner might require that we refrain from rebuking, since in that case rebuking would actually undermine the goal of rebuking.
Similarly, when Our Lady spoke obliquely about the "errors of Russia" (which are none other than the errors of the Jews and Masons), she realized with God that for her to say something along the lines of, "And the Jews will spread their errors throughout the world," that it would have resulted in some negative consequences, whether a backlash or additional persecution against the Church, or possibly driving people away from her message at Fatima or driving people away from the Church.
If I were a priest, I would not stand up there every week and condemn Jews from the pulpit, as if I had nothing better to speak of. I would likely refer to them in various hints (even as +Vigano has done on a few occasions). With those hints, those who have the ears to hear will hear, but those who don't would not be potentially driven away from Traditional Catholicism. When they become more mature in the faith, at that point it might make sense to raise the issue with them, but it might be on a case by case basis. Similarly, I would not treat in excessive detail issues that pertain, say, to the 6th / 9th commandments as they relate to married couples, as it would not be fitting for the innocents in the congregation, especially children, but take it up individually as needed, in the confessional.
In any case, what good would it do for +Vigano to start lashing out against Jews? People who are obsessed with the subject could high-five each other and pat each other in the back and do fist pumps, but in that case +Vigano would be preaching to the choir and who cares? What additional benefit would it provide to those already in the know? None. But in terms of those who have not been initiated into the Jєωιѕн problem, they might easily be driven away from the theological issues that +Vigano has been dealing with, rejecting him as some kooky Antisemitic conspiracy nut. +Vigano would lose credibility among the uninitiated, and he would thereby undermine any good he might be doing in terms of waking them up to the theological problems, the problems with Vatican II and the NOM. Which is more important, that someone be aware of the problems with the Conciliar Church, the NOM, with Modernism ... or that someone be aware that the h0Ɩ0cαųst was a hoax? Which is more directly pertinent to their salvation? So by emphasizing a less central issue (that of the Jews), he would be undermining their waking up about the more critical issues regarding the Conciliar Church. Once people have become Traditional Catholics, there will be no shortage of material regarding the Jєωιѕн question to which they'll eventually and gradually be exposed. When we die, God's first question at our judgment will not be whether we believed that the h0Ɩ0cαųst was real, but He will ask us about our love for and dedication to the Catholic Mass and for Traditional Catholic doctrine.
Some of you need to snap out of this nonsense and realize that there's a time and a place for everything. I'm conviced that if +Vigano were to unload on the Jews in a no-holds-barred manner, that he would lose the vast majority of his target audience, whom he is gradually influencing and leading toward Tradtion.