North/Central America is kind of the outlier running on 100-ish volts. Most of the rest of the world runs on 200-ish[0]. Electricity-related deaths aren't exactly common worldwide. And yes, I can see 100ish causing more fires — given dissipated power scales with current squared, my 2kW tea kettle can't possibly be safe in the US.
To be fair, pages like the one you link only talk about the official standards, which mean very, very little in most of the world.
I wouldn't assume anything about voltage in much of South America / Africa / Asia. You're going to get a frankenstein NEMA-Schuko-Chinese power outlet that will give you some amount of power for some amount of hours in the day, for a definition of 'some' that no one will be able to specify for you with any great precision and that will vary from town to town.
0. https://en.wikipedia.org/wiki/Mains_electricity_by_country