I like their reasoning behind the differently sized chunks ngl. According to text they have printed on the inside of the paper wrapping it’s because in the chocolate industry (and many other places) wealth is also distributed unevenly: a few go grab all the too big chunks (big corpo grabbing everything for themselves) and the last ones (aka the ones who actually harvest the cocoa in this case) will be left with the tiny scraps only.

Now whether that absolutely needs to be put into the size of the pieces is debatable, I tend to have bars for myself so worst case I grab a knife and chop the big ones up. Or just bite them in half.