This is all so wrong.
Sone games will definitely run hotter than others as they’ll stress the GPU, CPU and drive for various amounts of time. A game that runs the GPU at max 90% of the time will cause higher temperatures than one that only has 50% utilization.
Sony even detailed in an interview how they plan to change fan speeds for games to optimize them over time:
Beyond that people have different ambient room temperatures as well, so the air being pulled in is different temperatures.
Don’t know what you are trying to say about the internal being cooler. That’s the point, these 6-7GB a second drives run hot, so if they are in use, and run hotter than the internal, and are situated right near an intake vent, they’ll hear the air coming into the system.
There are all kinds of scenarios where the PS5 will increase it’s fan speeds.