Yes, but the fact that you noticed and bothered to report this suggests yours might be a worst-case example, among the hottest headsets. This can easily happen due to certain brands of thermal pads/pastes separating, hardening and cracking, or otherwise degrading. I have seen some extremely bad examples from otherwise professional products, sometimes due to design choices, sometimes due to design constraints, and also due to bad luck. Even with the best thermal paste, even I had had problems, with applying much more than specified torque to my ThreadRipper workstation heatsink, only to have it fatigue just enough to nearly pop off and require retightening .
What you find in the thermal image of your headset specifically may be of great importance.
So thank you for investing in the thermal camera. Eager to see the results.