That may be true but not all the reported 23 fires happened one way or the other at least from what I have read about many of these fires. Especially seeing two of the fires at least are 2012. Several of them have been reported as electrical fires and only a few have been confirmed as something related to transmission. At least from what has been said at this point. There doesn't seem to be a clear reason at this point and hard to say one thing is more of a problem then the others yet. With only 23 confirmed at this point it isn't a major issue at this time but 23 is more then anyone would like to see.
I know two that was reported was from overheating Auto. One was a idiot running circles in dry grass somewhere he shouldn't have been, getting tall dry grass caught up between the exhaust and the tranny and started a brush fire that ignited his Jeep. The other was someone pulling another vehicle out of mud and they had do muddy grass caught up in the transmission armor and was revving the engine up trying to pull out the other vehicle. I know one for sure was the transmission line was leaking and sprayed over hot exhaust and maybe another but it wasn't clear. At least two was electrical and 2 were 2012 and at least one was a manual.
So there really at this point is no hard evidence of a clear one problem cause and effect. Hopefully the investigation can bring light on that. But at least a couple issues have been addressed so it isn't like they are doing nothing. The Tranny skid plate was discontinued, The lines have a TBS to check for leaks and a recall was done to add a HOTOIL light from the ECU.