Looking a bit more, it looks like as soon as you install the Katello part, it requires you to configure that during the whole registration part (might be something to improve, hope you don’t mind if I tag you here Leos @lstejska )
There is also a deep dive video mentioned, which mentions this very briefly
Hm yeah there is a phone home part in the host-init script but port 80 is a bit weird, as this normally runs all via 443.
Could be as you say it
