The current WrLife Policy available online states:
3. For aged 65 and over: 2 choices
3.1 Health checkup required prior to coverage to determine pre-existing conditions. (or)
3.2 A six month waiting period prior to coverage for specific diseases. Specific diseases: Hypertension & Cardiovascular Disease, All Tumors, Polyp or Cyst, Hernias, Hemorrhoids, Prostate Disease, Diabetes, Cancer, Cholecystitis, Cholelithiasis, Calculi of the Urinary Organs.
So not every condition is covered.
The rationale -- strictly as I infer -- is that if someone age 65 or over declares a pre-existing condition upon application, and there is no (inpatient) treatment required for that condition for 6 months, the company believes that there is an acceptable risk to them as to any further treatment required.