the implications of another technological existence out there in space still using something so arcane as to be limited by the speed of light is ludicrous.
Not really. To start, FTL is a meaningless concept without extensive qualification. If you are "simply" talking about the ability to move between two space-time points that are not causally connected, then you are talking about space-time manipulation of almost god-like proportions, and the idea that anything with such ability would be concerned with something as trivial as "moving" is bizarre.
Ursula LeGuinn has many stories set in 1 ficton where communication is done instantaneously via the Ansible.
And again, this is complete nonsense for the simple reason is that there is no such thing as "instantaneously" in a universe like ours where there is no such thing as "simultaneity"...
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