So I think you might be stretching it a bit to say that they're ubiquitous here.
In my experience, the only flat I've rented that didn't have a dryer was a student hole in Preston that didn't have a washing machine either.
Maybe it's a sign of the times, maybe Lancashire is a cluster of dryer-lovers, but this is my anecdata.
"In the North literally every house has one."
"they've been ubiquitous since forever"
Clearly, neither of these things are true.
(I can't comment on the north, Scotland etc; I haven't been in enough private houses there.)
There's usually a breeze, and unless it's actually raining the clothes dry soon enough outside.
https://www.statista.com/statistics/289140/tumble-dryers-in-...
Shows that only a little over half even have dryers. One look around from my back garden tells me that this is fairly accurate (if anything, I would say more than 50% of my neighbours dry on a line outside)