As a commuter railway, it's not as if anyone spends long on the platforms anyway, you wait on the concourse then rush for your train. And it's open at the other end anyway, so you can always stand there if you want some fresh air!
Yes, people arrive by (largely) foot, will generally have less than 15 minutes to wait for their train and will head straight it.
It's noticeable how very, very quickly the concourse fills up with people if the service stops in peak periods.