> I should more precisely have said that the OpenBSD ports system
> includes instructions for fetching, building and installing specific
> non-free programs.
Yes, that would be the truth. What you did say, however,
is not the truth.
What I said was the same thing, in different words.
When the ports system contains a recipe to build and install P, it's
natural to say that P is "included in the ports system". You are
interpreting the word "included" in a very literal sense, but that's
not the only normal usage of the word.
As a courtesy to the OpenBSD developers, and avoid the risk of
confusion, I will try from now on to state this in a more precise way.