If you don’t pull the lever, those people still die though.

So either pull the lever and (figuratively) 1000 people die, or don’t pull the lever and those same 1000 people die as well as (again figuratively) 5000 more people.

1000 killed if you don’t pull the lever

6000 killed if you do nothing, of which those same 1000 people are in.

If I saw someone hesitating to pull the lever I’d have a problem with em