Jerry, this is part of the hobby. Don't get discourage.
Most but not all of the processes discussed here in the forums are for rooting the cuttings and a majority of the processes are for the purpose of ensuring and expediting the roots. However, using high temperature for expediting the roots will expedite other actions that have adverse effects on the cutting such as rot, mold and early shooting of the cutting and it is a race between the good effect (rooting) and the adverse effects under warm humid conditions.
If one is not in a rush to root fast, there are other safe ways to root. I recently read a post which indicated that rooting activity continue as long as temperature is above 45F (though high temps expedite root formation) but colder temperatures can delay shooting and keep the cuttings nutrient reserves for rooting process. I believe there are some rooting equipment on this principal.
So, using high temperatures above room ambient for rooting creates race conditions between rooting and rotting/mold. We`have the choice between the slow and relatively safe conditions and the risky expedited conditions unless someone has all steps expertly under control.