That’s just a “well, actually…” response.

Saying it doesn’t do ports is basically just giving the eli5 help the people who are confused usually need. 9/10 the people asking for help are asking about a records or cname records. They want basic DNS help.

When DNS is tought to laymen it’s just translation of a name to an IP, we don’t get into the weeds of rfc xxxx also has DNS provide the configuration of the listening service so the application knows how to communicate. Sometimes it’s best just to lay out the foundation so they can build on that knowledge later.