I must admit, I was a bit lost for words there too. I'm sitting in my office with a portable gas heater keeping me warm. It gets hot, there is a naked flame which admittedly you don't have, but I have it positioned in a safe place incase someone falls over near it. I'd probably switch it off completely if a young child came visiting. It's a fire, it gets hot.
This post made me think of the packet of nuts that has the warning "may contain nuts". It seems we still need such warnings though.
If you're concerned though, why not write to the manufacturer and suggest they mention on their leaflet/information booklet that the fire may get hot. (and I make that suggestion in all seriousness).