I don't think I'm confused by where he stands, it looks like he stands in about the same position he does when running the table saw. Everybody has their preference on where to stand.
I prefer to stand just like I would at either of my 2 shapers right along side & to the left of the arbor facing the fence I believe this gives better 2 handed control of the material being run past the router bit. Just the reason that they made shapers the way they did for safety.
I believe if it were me & there was enough room to do it I would mount the fence on the other side of the bit & stand at the end of the extension table.
I have my router table on the left side of my saw because I have the right side extension against the wall.
"Forget the flat stuff slap something on the spinny thing and lets go, we're burning daylight" Bart Leetch
"If it ain't round you may be a knuckle dragger""Turners drag their nuckles too, they just do it at a higher RPM"Bart