Especially in the outer boroughs (not so much in Manhattan), snow doesn't get cleaned up very quickly either. Walking can definitely be a bit of an obstacle course - ice, snow banks blocking the sidewalk, etc.
Anyway blah blah blah first world problems, just my perspective on it.
City was Montreal.
Yeah, that sucks. If it takes you 12 minutes normally to walk 1 km (assuming 5 km/h, which is a normal walking speed), now it takes you 24 minutes to and from the station in the winter.
So you're spending 45 minutes a day just walking to and from the station. If the rest of your commute is 30 minutes (train + walking to work from train), you're commuting for nearly two hours (1:48) every day vs. 1:24 during the summer.
That's assuming you don't also walk slower from the train station to work, which would make it even more of a timesink.
If you lived right near the station, it would be 60 minutes every day, winter or summer.
I mean yeah, it's only an extra 30-60 minutes a day (and your point was really only about winter so we'll be fair and say 30 minutes a day), but shit, I'm not going to turn my nose up at that. I'd definitely pay a small premium to get that time back every single weekday.
There have been weeks at a time where I've had to walk in the street because the sidewalks were just inaccessible or sheets of ice, which makes proximity to the train station all the more important.
I was just figuring that 1km is about what I would call 'metro-adjacent' for a residence.
Used to live on Waverley near Van Horne and I worked on Querbes and on Parc in mile-end though so I know what you mean. Fuck the rail track...