We touch our eyes between 2000 and 3000 times a day, upwards of 5 times a minute. It’s the number one way we introduce random crap into our blood stream, it’s the big disease vector. He touched his eyes.
You are speculating as that is not what the article said. Even if you weren’t there is no disputing that this stuff could be easily weaponized into something that does to us what we do to fleas when we flea bomb the house.