The thing with deads, in my opinion is this:
Yes they require recruitment of many muscle groups of the body, as well as stabalises and mental concentration. But these things can also be negative, depending on your training goals.
To get maximum stimulation to any one particular bodypart with them you have to load it up. Hence as a result you get carryover and maximum stimulation of many other muscle groups as well. This in turn hits the CNS really hard and you feel pretty shattered afterwards.
Now, if you are a bodybuilder, say, is this really the best way to hypertrophy your hams, or lower back etc, or quads, instead of targeting them individually on a particular day, sparing the stress to the rest of your body?
Even powerlifters often break the movement up, and dont just do straight deadlifts every week. They may do partials, or speed work, or work the individual components of the movement, and put them all together on meet day.
Deadlifts are great. I love them. But I can see the point of the original poster.
They have to be incorporated reasonably into a routine, and not just done with a brainwashed “deads are the king of all exercises” mentality.