If you're claiming that they won't, I'll happily be your counterexample. Buying a Brompton and riding 3 miles from the end of public transit to work through pretty much all weather in Boston was about the best thing I did for my sanity in all of 2019. Yes, on the snowy and icy days too.
I did a fair amount of bike commuting in Cleveland as well, though the drive was less hellish and I drove some of the lousier days.
The worst part of moving to Vermont, perversely, is that I get less exercise because it's a 25 mile one-way trip to the shop I work out of.