Willfully ignorant.
My own state had "open enrollment" periods and individuals with pre-existing conditions could enroll with a brief delay before coverage. It had been doing so for as long as I remember. Some pre-existing conditions might cost $200,000 to cover for a year and others might cost $200. It all evens out if the risk pool is large enough. Brain tumors that cost $200,000 to treat every year are fortunately rare. Mild osteoarthritis that costs $200 to treat is extremely common.
I’ve known this for a very long time. This whole discovery by WaPo is designed to discourage Trump’s supporters before the fight to implement his agenda takes place. They truly fear him.