Not going to watch this, but I think 100% of the appeal in these videos is the immediate catharsis of killing something ugly, diseased, or filthy. No one wants to watch a cancer cell slowly wither away via months of chemo, but the idea of neatly extracting a huge disgusting lump and stabbing it to death like a Chucky doll 89 minutes into its running time is immensely gratifying.
Ow. Cysts hurt, like worse than a really bad toothache. I had a bad one earlier this summer behind my ear and was seriously considering seeing a doctor to get it removed before I watched a bunch of these DIY videos. So instead I just took a couple of beers with me into the shower and put on some music and let the jet stream do its work.