Youtube-dl (2020) would be an easier case to present to the public than DeCSS (2000).
Everyone knows what Youtube is. It's easy to understand the utility of being able to download a video from Youtube to save it on your computer. If they didn't already know this was possible to do, they'd immediately want to start using it as soon as you explained it was possible.
DeCSS was exploiting a weak encryption scheme's weak key distribution scheme. Where the only final explanation for why this matters is that it can be used to rip off DVDs.
Everyone knows what Youtube is. It's easy to understand the utility of being able to download a video from Youtube to save it on your computer. If they didn't already know this was possible to do, they'd immediately want to start using it as soon as you explained it was possible.
DeCSS was exploiting a weak encryption scheme's weak key distribution scheme. Where the only final explanation for why this matters is that it can be used to rip off DVDs.