It doesn't quite say that. It says two of those ingredients, linalool and hydroxycitronellal, used in an aftershave caused facial psoriasis. The levels might have been much higher.
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I must disagree. From a strictly utilitarian POV that may be correct, but many traditional wetshavers simply revel in the heavenly scents afforded to us by this art to the point that it becomes a integral component of the shave. To lose the wonderful scents would be a partial loss of enjoyment of the ritual itself, and I do pity those who must use unscented products out of need rather than by choice.
But "No useful added value"? Not quite.
Respectively (of course),
Ryan