This sounds downright dangerous. A screwdriver with a loose piece of romex insulation floating on the shaft while working in a live panel? Even if it were taped I wouldn't trust it. Isn't your life worth the cost of a properly insulated screwdriver?
First thing, PVC pipe is not glued, it's solvent welded. So that "PVC glue" he's referring to is actually PVC solvent (which is designed to chemically melt the PVC plastic). I can think of at least five reasons why this is a bad tip: (1) Applying PVC solvent to the bend will damage & weaken the PVC pipe; (2) It's expensive to waste solvent like that; (3) It's bad for your health & the environment (why put all those solvents in the air -- and your lungs -- if you don't have to?); (4) It's messy having melted PVC gooping everywhere; (5) For visible installations, it makes the PVC pipe look bad (and it'll make your work appear very sloppy). So what's wrong with a rag soaked in plain 'ole cold water?
I'll bet they have a heck of a time getting a good, watertight solvent weld on those two couplers after coating the insides with pulling soap. Anyway, a solvent weld cannot be made after the couplers are in position on the pipe; the solvent must be applied to both the inside of the fitting and the outside of the pipe (to the full depth of the fitting) and then the pipe quickly inserted all the way into the fitting with a quarter turn.
I'm sure there are other bad tips there; I haven't read them all yet.
That should work as long as the fishtape is only bent in the direction (or opposite direction) of the side that wraps up in the reel (i.e., not bent sideways).
Where he talks about a "snake shape", what he's describing is a zig-zag pattern.
The real trick is to recognize what will, and won't work in practical installation! Cool to look for new ideas though to be on to thinking outside the box.