Yes. From news reports I heard, the mom posted the video to educate other parents of the danger.
Special straps can be purchased to avoid this kind of tragedy. They are relatively inexpensive.
That seems a bit extreme. I'm sure he's learned his lesson. ;)
Use a stud finder and screw the dresser to the wall. It is very tempting for children to pull out the drawers and try to climb them like a ladder.