Download a playlist unavailable

I have a problem with "Download a playlist" option.

For example on thiс channel (https://www.youtube.com/c/LAurenrdaniels/videos) when I hover my SFN addon I see the "Download a playlist" option and when I click on it it'll generate all links and download all videos.

But on this channel (https://www.youtube.com/KaliMuscle/videos) this option is not available, "Download a playlist" is grayed out. How is that? Thank you!