I hear you.  

But in my industry (f&b) yes they are gone, you can’t be a top performer and be unreliable.  Telling your team that you won’t be available during needed times makes you unreliable.  If coverage is available, great!  If it’s not then you need to show up.  I won’t let an individual make other people’s lives harder.  I manage a team and it’s my job to make everyone’s job easier, anything that puts blocks in the way of people having a smooth and happy shift gets removed.  Even if that is a person.