They were indeed! Because naturally, what people care about with fudge is that it is a soft cube! Any other soft cubes can, therefore, be substituted!

Or at least this seems to be the prevailing attitude on recipe websites, who are all obsessed with making fudge "healthy", as though no one will survive the experience of eating real sugar and cream fudge and having to stop because that much sugar at once makes them feel slightly unwell. Much better to have essentially a frozen smoothie. I can totally eat a whole smoothie! It's foolishness.