Hi!
No, John the RIpper is also used in Network Hacking Advanced course. I don’t remember all the tools used in the Ethical Hacking course but it is about the knowledge you’ll get from it, not about using tools, for example hashcat and john will do exactly the same, cracking hashes, using those tools can be solved by googling a bit, in any case the important thing is to know how to get the hashes, how to capture a handshake, how to dump a database, etc.

Greetings!
Diego