Leaders say a lot of things. Even without nukes, Israel has enough conventional military might to have a significant detergent effect (and to defend against attacks that actually do happen).
Further, the politics in the middle east has not been Arabs vs Israel for decades. Israel is a well positioned member of the anti Iran coalition.
So. The secretary of defense is not an elected position. Most people in the country don’t even know who currently holds the role.
The opinion of those he leads and works with is much more important.