These are guesses but I think the main reduction in fires from 1950 to 2022 are:
a) better electrical wiring and circuit provisioning. Overloaded outlets or circuits were more common in the 1950s. Fuses could also be tampered with more easily than circuit breakers.
b) Matches everywhere. You had matches in the kitchen for lighting the stove, and around the house for lighting cigarettes. "Kids playing with matches" was a common cause of fires. You don't hear about that nearly as much today.
a) better electrical wiring and circuit provisioning. Overloaded outlets or circuits were more common in the 1950s. Fuses could also be tampered with more easily than circuit breakers.
b) Matches everywhere. You had matches in the kitchen for lighting the stove, and around the house for lighting cigarettes. "Kids playing with matches" was a common cause of fires. You don't hear about that nearly as much today.