It’s not a comment on the value of the treatment, the headline is just wrong. Saying “cancer vanished in every patient” without further qualification is ambiguo

It’s not a comment on the value of the treatment, the headline is just wrong. Saying “cancer vanished in every patient” without further qualification is ambiguous, not too different from saying “illness was cured in everyone”. The correct title should have been “Success using a targeted anti-cancer therapy”. Btw, there is still research that tries to find a general mechanism for interventions. The other day I looked at interesting work that hinged the delivery of disruptive payload on telomerase activity. Telomerase is expressed almost universally in cancer cells and in stem cells; therefore somatic cells would be spared, and it’s hoped that stem cells would be able to recover. Anyway like you said, both approaches are meaningful, which is why it’s important to tell them apart.