I still don't get it. That analogy assumes that light is the only way causality information can be transferred - i.e. if I see the phone call being placed befor

I still don't get it. That analogy assumes that light is the only way causality information can be transferred - i.e. if I see the phone call being placed before its sent then it seems like causality is violated. But it I look at what's happening via the FTL phone then I can see that it's not