That seems to be what the article is implying should happen, just like doctors of the past should have embraced expensive and inconvenient thermometers sooner, it seems that the article is implying that modern doctors should embrace modern diagnostic tools:

Modern CT scans, for example, perform better than even the best surgeons’ palpation of a painful abdomen in detecting appendicitis. As CT scans become cheaper, faster, and dose less radiation, they will become even more accurate.

Though Defensive Medicine is definitely happens in the USA and probably other countries as well:

https://en.wikipedia.org/wiki/Defensive_medicine