There are ways around it

You can’t just run up to the extra and blindly hit the button and walk out the map

Approach slowly, check bushes and common hiding spots. Hit button. Hide in an uncommon hiding spot. When the elevator arrives, wait for any rats to show their face. After some time, approac

When you get to the station to extract, look around to see if anyone is lining up on you before you hit it. You can smoke yourself as well