Yesterday I went from Kuhinja to Krn and then descended to Krn Lake to Lepena.
On the descent I met dozens of people, children, none had crampons. I don't say they are not needed, they can ease descent or ascent, but my opinion is that if you are a bit used to snow, especially if it is soft, there is no fear of slipping somewhere. THIS I say for the mentioned mountain, for others where it is steeper it's a different story.