As someone from the '1 GFCI for the entire house' countries, i can say that it's not that big of a deal. Years go by without the thing ever tripping. It's so rare that i actually remember most of the trips:

- Central heating burner was not cleaned properly causing flames to lick past some sheet metal which deformed and contacted a live contact, causing a short to ground (around 2018)
- Faulty ATX power supply (2001, likely an actual nuisance trip due to a 'weird' filter, but a different PSU solved the issue)
- Faulty bread making machine heating element (2024)
- Faulty door hinge support of an oven, which over time wore through a wire (2015, different house)
- Ants crawling inside outdoor lights causing leakage to ground (2023, stationary caravan)
- I think once or twice in 30 years it tripped from a very nearby lightning strike.

Code now requires or recommends the lighting in new houses to be divided over multiple GFCIs so if it trips, you're not in an entirely dark house. But even if you're on a single one, it's not that big of a deal when the thing trips. You grab your phone or a flashlight, turn off all breakers, turn on the gfci and turn on the breakers one by one and see on which circuit the fault is.