If IP Isn't as Important as They Say, What Is?

The author of the post wonders which information is most important for direct attacks in cybersecurity, if it is true that the IP address is not as crucial as it is said to be. They mention their interest in obtaining the name or address of a server or target, scanning vulnerable or open ports, and then attacking accordingly. They acknowledge that hacking is not limited to port scanning and seek simplified explanations on the most useful information for direct attacks.