I’m not sure how it is with the very latest Samsung phones but for awhile they were trying to mitigate heat buildup for gamers. As I recall it was some kind of thin metal pipe. It worked though some reviewers said it didn’t really do anything. But my S9+ ran very cool at a time I struggled with overheating on my iPhone.You really can’t avoid overheating with these SoCs. They don’t have proper cooling and are designed to run to their throttle point and then throttle. The touchscreen issue looks annoying though.
I personally decided to skip the 6/6 Pro and watch how Google’s QC is with it. If all goes well, I’ll probably go for a 7 next year.