bitcoind – Why does a hidden bitcoin service on a wiki need a torc fix?

According to the wiki, the torrc file requires the following settings:

ControlPort 9051 
CookieAuthentication 1 
CookieAuthFileGroupReadable 1

However, if I simply run bitcoind.conf, I get onlynet=onion and listenonion=1 you will get the same result getnetworkinfo Onion shows that it can connect, but ipv4/6 cannot.

What do we offer? Why do I need to change the torrc configuration as explained in the wiki?