Watched a bunch of videos on setting up cantilever brakes, and never knew they were so diverse. As mentioned above, it looks like the adjustment of the hanger and the angle on the brake pads to the hanger are super important along with having mushy brake levers. The bike above clearly has issues with location of that triangle hanger piece and the brake levers are too tight. I also have the brake shoes too close to the rim. Regarding the front and rear straddles reversed? Not sure, as mentioned above, not my bike so it's possible someone was playing around with it before it was brought to me.

Great choice to post, Path Less Traveled, as I've really been enjoying his videos as of late.