I don't think you're entirely correct in your assumptions.
I've been a doctor for 21 years and we thought we'd be facing quite a lot of those changes and it hasn't really happened. Robotic surgery was definitely coming in as I left hospital medicine and it's more prevalent now - but requires a skilled surgeon to operate it. Cancer survival is improving but the diagnosis and management of the aftermath is still difficult. People are living longer, cancer is going to be a very common cause of death for many more decades. We're not going to beat every cancer.
I think Amber's post is perfect about the realities of medicine right now - no need to repeat any of that. The reality is that 50% of UK graduates will go into general practice. The reality is also that GPs are haemorrhaging from the profession at an alarming rate (one leaves every 3 hours. Many are retiring early. Some are moving into public health and inform us with astonishment that they have time to eat and go to the bathroom in their day. Many are going to Australia, NZ or the new favourite Canada). Some of the se.x.ier specialties have a 1:8 or higher application rate. Many people never make it in their preferred specialty; still more change their minds. To go into medicine with the mindset of "I want to be a ...." is a risky thing because most people don't really know their skill sets at 18. You have to go in with the "I want to be a doctor and I really can't imagine doing anything wise with my life" attitude, in my opinion.
Things that have increased over the last 20 years and are set to get greater over the next 20 in my opinion?
1) Litigation. No win no fee lawyers are the bane of our lives. We get attempts to sue us fairly regularly. They are all absolutely hopeless cases but all take time (lots of time) and stress. Also it is really hard to have to keep seeing the patient who is suing you bit apparently remains happy to keep coming to see you regularly?
2) Entitlement. The "this is my third cold in three months and something needs to be done about it" attitude. The "my sore throat started this morning and I need it to be gone because I've got a party tomorrow" attitude. The "I need the NHS to deal with this because I paid my taxes" attitude.
3) Complaints. Lower level than the litigation stuff. Trekking more time. Getting worse across hospitals and primary care.
4) Older iller people living longer needing more support with no good social service input because I can't see that improving either with families ringing constantly, desperate for help that doctors have no role in providing but "who else is there?"
5) Mental health provision is already woeful. It's getting worse. We're expected to plug that gap somehow but really can't. It's going to be a big big problem going forward.
I could go on but I might have already won the award for the longest ever post.
I would suggest some reading for your daughter , Eccentric. 1) "This is going to Hurt" by Adam Kay - very true to life story of his junior years. Every young doctor I know has read it and says that if you still want to do medicine after that then it's the right job for you. 2) the two books by Henry Marsh - he's a neurosurgeon (and you don't get se.x.ier jobs than that in medicine) "Do No Harm" and "Admissions" (he's a bit of a pretentious tw*t but he writes well and manages to get across some of the changes to the NHS that led him to retire). It would be interesting to see her views after reading those.
Please don't anyone think that I am putting everyone off medicine as a career. For many of us it has served us well and I still enjoy seeing patients most of the time. And I desperately want good young doctors to come through and take some of the empty jobs! But it is definitely not glamorous and getting less so. There is very little respect from patients and that is also getting less so. I had an apparently educated lawyer screaming at me (and I use the word advisedly) for 10 minutes that she would sue me and I would lose everything because I refused to do what she wanted (I was right, she was wrong) - just in the last month.
If your dd goes for it, buy her the "My medical degree is worth more than your Google search" mug as a graduation present - she'll need it