I also completely disagree with the builder description.

It sounds like they've not had to use it for any meaningful work, and basically described a constructor. Yeah, named parameters are great, and I miss them when I don't have them, but if you think a builder only works like this

Object.setX().setY().build()

Then it tells me that you haven't built anything meaningful. It's a way of building a state and running an operation at the end in a contained manner. If your build method doesn't run some sort of validation then it's probably a waste of time, might as well just call setters, return this and call it a day if you want to be verbose and chain commands.