I didn't know that, so thank you. But in 2024 version you could just see without having to right click, you could then just block all the unused clips and delete them en masse. I sometimes call about 60 clips in and only use half of them, and then I used to like to be able to quickly block and delete the unused ones in the list view. I think I should be able to do that fairly quickly in the icon view.
I agree with you but can't fix it. I usually use a Lightroom workflow to select my clips for a project so don't have many that aren't used.