Thx for the input.
I think the function RespondToDestroyRequest is not working as it is private. But I'll test it.
Edit: As I assumed it will raise an error because the function is private.
Oh well, It seems I interpreted the needsConfirm parameter wrong then
Disabling the destroy right-click menu pint is the next step. But you could easily drag&drop the item out of your inventory to destroy it too. So I'm currently focusing on this way.