The post chooses to emphasize the scary (ZOMG it allows port 22!) without the necessary information that the default networking mode is bridged, such that the c

The post chooses to emphasize the scary (ZOMG it allows port 22!) without the necessary information that the default networking mode is bridged, such that the container wont be opening port 22 on the host. So the article implies that this capability allows a security risk, but the default networking mitigates that risk.