They say they aren't planning to replace humans, instead of one human unloading one truck, it will be one human supervising robots unloading 4 trucks. Sure seems like a replacement to me.
For it or against it, when people talk about robots replacing labor, this is exactly what they are talking about.
Our hope, at least mine, is that we remove drudgery and difficulty from people's lives and create new jobs to replace the ones that are lost.
That all changes when we get what I call Moravec Class robots, though: those that overcome Moravec's Paradox.
The Stretch robot (shown in the article) can't unload a truck. It's not designed to lift itself up and enter a truck. Although, the other robots from BD (shown in the dancing video) might be able to do so.
Obviously wouldn't work OOTB, but definitely seems doable in some niche truck modifications (and likely little-to-no Stretch modifications).
No business wouldn't want to increase their total productivity.
GP is correct. 1 supervisor + 8 robots replaces 8 people.