The thermal control gives them an advantage because they know the ΔT temperature that the filament has around it. That is awesome and should be noticeable in the build quality and speed, as you mentioned.
Having a heater inside should have safety protection also for fire, so I would be more comfortable if the product had a UL mark, i.e., it has been inspected by UL to check for fire and shock hazards. I myself would have designed it with ceramic heating elements so the heating elements are not exposed. Problem solved.
Note that if you are worried about shock, you can plug the unit into a GFCI outlet or use a GFCI protected cord. They should probably add that to their manual. My entire bench is powered from a GFCI outlet so if I do something Darwinian, I get to witness my goof. So far though, no trips.