some pipes do smoke hotter. Clays for instance. And those nomally used for crack and meth.
But in the real world, composition of blend, moisture of blend, how fast and hard you puff on it, will have a bigger impact than we admit.
Yes, I have pipes that got hot. I had a grabow riviera in the olden times that was small, but i got it hot enough to make the finish get sticky.
But I have had more pipes smoke cooler with certain blends, and specific weather, then they would at other times of the year.
I had a pipe that I liked smoking in winter time, outside. It would smoke cool but very moist inside. With Prince Albert.
In warm weather, it would smoke HOT to the touch, but dry inside.87