I am not zero-trained in BioMedicine. The writer is actually not too wrong about it. That field has been always evidence based, for example, you can always enjoy the evidence in Morgan or Mendel's 100 years ago paper. And the data collected in that field is usually much bigger scale than so called big-data, do you know how much DNA needed to be purified, crystallized, imaged and be discovered as double helix? And don't forget to check how drug candidates are "screened by library" -- that's one fancy name of "randomly try with chemicals".

BTW I don't think it's correct to say "curing some type of cancers", it's actually some treatments that extending the dying path.