I can tell you for a fact that snow and salted streets is far, far worse for an e-bike (I assume cars/trucks too, but maybe not since the gears are more isolate

I can tell you for a fact that snow and salted streets is far, far worse for an e-bike (I assume cars/trucks too, but maybe not since the gears are more isolated from the street?). However these places are like that only for 2-4 months of the year. Compound that to e-bikes batteries usually (always?) don't have heating systems to keep them at >0 C, at least you can take them out of the bike when not in use though. Worse is there are some cities that have both, humid summers and salted streets in winter.