It’s a great way to break the needed perfect form and really hurt yourself. Most people don’t do it right, and never will. Unless you are a competitive power lifter, there is no reason to do this exercise. The muscles involved can be trained more effectively and far more safely with alternative movements. If you are tall and lean, dead lift and squat are injuries just waiting to happen.
I agree 100 percent. Deadlifts don’t work your arms (except your forearms, necessary for gripping heavy weight), your delts, your traps, or even your abs except coincidentally. To say that deadlifts are the only exercise you need is absurd.
Nonsense. Normal people don't pick up heavy things off the ground? Really?