Not true of _everyone_, but definitely true of some (including me). Additionally, white coat hypertension is not entirely benign. From the wikipedia article you link:
"In general, individuals with white coat hypertension have lower morbidity than patients with sustained hypertension, but higher morbidity than the clinically normotensive."
In general, individuals with white coat hypertension have lower morbidity than patients with sustained hypertension, but higher morbidity than the clinically normotensive.