Serious question: what would you expect Rabbis to say, had they been given a microphone? To remind people about Hashem? Whoever believes, believes, and whoever doesn’t doesn’t. To call for more learning? People should be learning more always, what does that have to do with the situation? If you want to say that it is lack of learning that brought this calamity, what is your evidence? I’ve been to frum atzeiras for the matzav, and even the best speakers had nothing to say.
The only Rav who was able to convincingly connect current events to Torah was Rav Meir Kahane, and he is no longer with us.
All the speakers were boring, they were not there to provide any insights, but rather only to show support through an act of speaking. Ideally, there would be no speakers at all, we’d just all gather in the National Mall, chant ‘no ceasefire’ three times, daven mincha, and go home.