Table saws are dangerous items. Dave lost a thumb because he got in a hurry and wasn't paying attention. The hand-jig on the video is a great idea to keep from cutting off a finger or fingers. It's the first item of his I sold after he died. I was always afraid of it.

As far as 1 finger or 2, that's a personal preference. I use 2 but find when I get going and get fast, sometimes I use just one or maybe none!

I once read an article in Fine Woodworking magazine which stated that, after the planer-jointer, the most dangerous shop power-tool is the band saw, for the simple reason that it is thought to be not dangerous and so folks get careless using it, often with very unfortunate results. Before retirement I was a long-time woodcarver, and spent many hours at the band saw. I always looked on that whirling, endless, sharp-toothed blade as I would a poisonous snake and kept my irreplaceable fingers at a respectful distance from it.

Though I don't see why they should be inherently dangerous I've heard that radial arm saws rank right up there.  For m-a-n-y years I sorta wanted one, but now that my building/repair work has dwindled to where one wouldn't get much use, I see them regularly come up for sale at fairly reasonable prices. 

I have a few [minor?] nicks/scars on my knuckles/hands ... hand tools rather than power.  When I was young(er), operating tools safely seemed to come naturally ... as I get old(er) I find myself kinda talking myself through the process .... reminding myself w.r.t dos/dont's.   Knock on wood, it seems to be working. [I think that mindset became more pronounced when my doc put me on Xeralto.  ]

I have several push sticks and use them, but I don't have one like the one in the Facebook post. That's a very clever idea. A friend and I worked for a short time in factory that made corrugated cardboard containers (boxes). On evening we were assigned to the large band saw to cut large sheets of cardboard into smaller pieces which were used as separators between stock that was shipped out. We alternated between feeding and off loading the sheets as the came through the saw. As I was off loading I noticed some red streaks on the top sheet. I shouted to my friend to shut down the saw but he couldn't hear me. I ran to the front of saw, shut it off, and he looked at me and asked what I was doing. I told him to look at his right hand. He had cut the tip of his thumb off. I've been extra cautious using a bandsaw ever since that event.

Sharp spinning blades and string instruments—not the best of all possible combinations (he said, speaking from experience…).

thats pretty neat... i always use one but not that nice or cool