That's possibly true, I don't know much about the American health care system however I can't imagine they would significantly raise the cost of your insurance plan beyond what you're able to pay because you needed a 2 week supply of drugs to treat a one-off parasitic infection.
If the American health care system is so broken that insurance companies are making people destitute for receiving care then the USA has bigger problems than a single CEO.
That is unfortunately exactly what is happening, as an example here's an article from back in 2018 about the 650mil being independently raised on GoFundMe to address inflated costs.