I don't think that is in principle problematic (unlike the social problem statements pointed out in the talk). A system which amplifies human resources by filling in for their common activities over time could use sophisticated tech drawing on the latest in NLP. The metric would be a ratio of the number of service requests they handle per day / the number of "trainers" (or whatever name given) compared to the median for a purely human endeavour where every service request is handled by a customer-visible human.
In the Mechanical Turk analogy there is no such capability amplification happening.
My experience with automated "help" desks is that I have to let the automatons fail one after the other until I finally get connected to a real human. Then I can start to state my problem. All that those automated substitutes do is discourage customers from calling at all.
In the Mechanical Turk analogy there is no such capability amplification happening.