Pretty much everyone in a major fish market has a harder job that the one described in the article. I was commenting on what these scientists think hard work is.
Yes, for any job you can find a tougher one until you reach roughneck. I've no idea the point you are trying to make here.
But really, I don't know you. Maybe you think waking up early, counting fish, taking samples, and sometimes buying them is hard. I dunno. It's more physically taxing than say, writing a scientific description of a fish but the average person would be hard pressed to call these market excursions hard work.