I agree, and I would also put forward that most people don't understand what peering is or how it works. When people (usually developers who are not network engineers and have not worked at that level of the stack) talk about "egress", they mean delivering bits from your network (cloud or otherwise) to any other network on the internet. How can you put just one price on delivering a bit either to a host within the same datacenter or one on the opposite side of the planet? Physics still mean that one is more expensive than the other.
The existence of the world wide web has tricked us into thinking that sending traffic anywhere is/should be the same, but of course it is not. So while the price you (a cloud customer) pay for egress pricing is (often) indiscriminate on where that traffic is going, using common sense, we can understand that some traffic is more expensive than others, and the price we pay is a blended price with that aspect "baked in" or "priced in".