I've had it with this attitude from the charedi olam.
No one who was frum was injured in any way on simchas torah???
Shtusim.
No one who was involved in the the gimel chamuros/chilul shabbos was saved in a miraculous way?
shtusim.
I don't know anyone who claimed "No one" was injured, but the facts are the all of the yishuvim who were שומר שבת were miraculously unharmed. Same for those who kept שמיטה. If you wish to deny that or that it has any significance, you're free to do so, but I'll take it for what it is. The idea that שבת protects the Jewish people is not a newfangled Charedi idea. אם אשמרה שבת א-ל ישמרני was written by Ibn Ezra about 1,000 years ago.
We also know that HKBH conveys messages to us through current events. All are free to interpret the messages to suit their tastes, but I'll go with the פשוט פשט and quite comfortably accept the fact that שמירת שבת does, in fact, protect us.