I doubt you have ever encountered one in the wild. They are quite aggressive. If you want to stick to your Penguins can tap dance utopian’s belief that these snakes aren’t aggressive then go right ahead.
The biggest problem with that snake is when a snake dealer lets one of 'em loose in the neighborhood. First folks to move to a motel for the night while the cops, et al, hunt for the snake are the Africans and the Indians.
They know.
Compared to a copperhead dozing under leaves in late Fall in Southern Indiana, a cottonmouth is probably quite aggressive.