“That means instead of more than a million cases in the United States right now, there could be anywhere from 10 million to perhaps 100 million”

Um, excuse me what?

1 — USA has 370,000 cases according to the very link you added

2 — If there are 100 million infections this is good. It means the disease is far less deadly and effective herd immunity will be reached in the next few weeks when 98% of the 100 million currently infected people recover.

3 — Where is the source for the quote? If 1/3 of the population is infected how come only 20% of the population test positive. Are you suggesting they are trying to only test people who don't have the disease?

source: https://ourworldindata.org/coronavirus#testing-for-covid-19

Please Explain