Wait…It’s going to get worse?

I just started working a couple months ago. And I’m reading that apparently this isn’t even the worst it gets. I mainly on the IC belt and sometimes it’s very very easy and sometimes it’s a lil packed. I’m kinda a gym rat so I can lift the boxes but I also like to help my co workers so that there not an avalanche of boxes sitting at the end. What I’m trying to ask is how bad is it gonna get? Are they overreacting lol? Hella mfs saying they gon leave and I’m not staying if everyone just leaves. Not worth 20 imo.