If you are someone “important”, You need to turn off iMessages as that is a huge risk factor as it’s a system app. There will always be zero click exploits and that should be all you need to know
you might be surprised. you don't have to be somebody important, you just might be working somewhere interesting or know somebody important.
ps Snowden leaks showed NSA hacked ordinary broadband providers administrators to get access to networks, because POIs were using those providers.