She may have seen cluster munitions at the fare.
But that picture shows an 84 mm combined impact/time fuze for a M-84 Carl Gustav recoilless rifle round and an 81 mm fuze tip for a 81 mm mortar round. The timed fuze is quite nasty - you set it for distance (by flight time) with a view to have it detonate above or to the side of infantry under cover.
Neither if these are cluster munitions, however. I’ve used both back in my army days.
So if that picture is her proof she’s at best misguided.
I can’t wait to get downvoted for facts.