Quite agree. In 2018 I went out for a short spin to check possible vantage points for the tour de France that was to pass close to home after giving the car a check over ( oil level, tyre pressures, coolant). On the way back - sudden rise in water temp and steam!
The thermostat housing had decided to split! I was on a very rural small back road. My spares 'chest' was in the boot as usual. The container of coolant was sitting in the courtyard I suddenly remembered! No bottle of water!
There was a house at about 30 metres but closed up - maison secondaire no doubt. Just looking along the road towards the next house and a car came along, they had a small 25cl bottle of water they gave me. Ok, walk to next house. didn't have to do that as the next field had horses in. Horses = water. There was a large trough of the stuff just inside the field, I could reach through the fence and fill the bottle. Refilled rad and managed to get home before the water temperature rose to the point where the thermostat would open and of course let out the water/steam.