Read the lines before that -- or at least read the "also" to notice stabbing is a secondary injury.

Mostly: just put the avocado down! ERs feel the need to warn about how common an accident this is, so why tempt fate?

People lose their grip on the avocado and accidentally slice their palms or fingers, doctors have warned. When this happens, there’s a high likelihood of people accidentally severing their nerves or tendons. However, people also tend to stab themselves in the hand as they attempt to use the knife tip to remove the avocado pit.

From the Sun:

Wolfe recommended holding an avocado down on a cutting board and slicing into it with the dominant hand, cutting around the fruit at the equator, then rolling it halfway over and cutting again, according to CBS New York.