MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I've seen one of those videos:
and it points the finger either at sub-standard xt60 connectors, or improper installation of the connectors, without using solder.
The only point I made above was simply that a lot of people worry about Ender fires, but then focus on thermal runaway as the cause. They then update the firmware in order to add thermal runaway protection. However, the new firmware often causes the printer to malfunction (there seem to be a lot of "I updated my firmware and now it won't print" posts).
However, if the real hazard is power supply connectors, the thermal runaway upgrade will do absolutely nothing to protect from that problem, and therefore you will have spent considerable time, money, and effort to fix the wrong problem.
I am certainly going to check my xt60 connectors tomorrow to see if there is any sign of damage, and I'll also touch them after a few hours of printing to see if I can detect any abnormal warmth.