It's a bit like sharks, or wolves. If you are more experienced on this, on the complexity of ecosystems, you will start to figure the direct loss of production they can cause is relatively small and very well compensated by the role their indirect role in the ecosystem, less wasps could mean more caterpillars or other parasites (bad for farmer and beekeeper since bees will have less plants to forage). Bees know since a long time how to protect themselves. There's a reason scientist explain how sharks, wolves, wasps are highly beneficial. I think fortunately there's a growing awareness about this, more and more farmers understand these things as the condition for farming, pollution, drought, climate changes make things way harder for conventional agriculture methods