I agree it doesn't cover everything they do, but covering just some of the more routine activities can be enough for significant disruption. For example, dermatologists are fairly worried that "upload a photo and we'll diagnose your mole", either via software or outsourcing, will cut out a significant percentage of their business. It's not by any means the hardest work a dermatologist does, but it's common, steady work that produces reliable revenue, so it hurts to lose it. It may be that we won't need as many dermatologists only to handle the actually-hard stuff.
(Though for medicine in particular, I think a mixture of "you can always do more" and humans' seemingly infinite hypochondria means that medical spending will continue to eat up as much money as we're willing to throw at it.)
If they are worried about it, why not preempt it? A simple upload form on the internet where you can upload your a picture of your mole and have a dermatologist take a quick look at it for $15 would be very attractive for a lot of people (not least because it is easier for people to do it than it is to schedule a visit.
And it would be a nice side income for some young doctor.
This sounds like a glorious future to me :-) I can't wait to have automated health checkups as well (maybe even persistent checkups).
Perhaps the number of dermatologists won't even decrease - perhaps we'll simply have an increase in quality/frequency of screening for the same number of dermatologists. Perhaps it will open things up so more people can afford to get regular screenings. I'm not poor, but that's one of those things that I classify as too much of a luxury to do regularly - there are a bunch of different screenings that people could do.
(Though for medicine in particular, I think a mixture of "you can always do more" and humans' seemingly infinite hypochondria means that medical spending will continue to eat up as much money as we're willing to throw at it.)