Also here is the summary from Wikipedia on what Post-scarcity means:
Post-scarcity is a theoretical economic situation in which most goods can be produced in great abundance with minimal human labor needed, so that they become available to all very cheaply or even freely. Post-scarcity does not mean that scarcity has been eliminated for all goods and services but that all people can easily have their basic survival needs met along with some significant proportion of their desires for goods and services. Writers on the topic often emphasize that some commodities will remain scarce in a post-scarcity society.
I see what you are saying but it’s somewhat different from resource scarcity. There is no scarcity in the ability to transmit information, but there is still information scarcity.
However, what makes information still valuable is the difficulty of first discovery. It costs money to go on the ground in a war zone and find out what’s happening, and if nobody did it, we just wouldn’t know.
This doesn’t even factor in the costs of filtering through misinformation and disinformation.