Thats true. I assumed that the bamboo Labs printer has some kind of thermal shutdown / overheating protection.
But i guess that is not enough. They should also habe a fire detection. Something like a smoke detector (optional would also be fine)
My printer got one installed above (but this one is because i fear that my PSU is catching fire xD )
I agree, using a VPN is generally a good idea (if the alternative is exposing it to the web directly).