[xixi77]

If they are satisfied with hiring "a jack of all trades who has mastered very few or none of them, and who will have to scramble like crazy just to meet the base requirements of the job, let alone excel at them." (which I agree is the likely applicant profile), why not?

However hard it may be for some here to believe, there are many people who are most efficient -- and most satisfied -- in an environment of constant and unpredictable variety in both type and intensity of work, just as there are people who find it more entertaining being jacks of all trades rather than mastering one.

Implying that all jobs should accommodate your personal preferences (e.g. specialization, predictability, or work-life balance) is not doing them any service, and their skills are already discounted too far in this marketplace.