Ladies and Gentleman,
here we see the dissonance inside Blizzard development.
There are absolutely separate teams who are responsible for the raid encounters themselves and separate teams for gearing, and these are even separated from the core class balance team.
OR
they strongly underestimated the value and frequency of titanforging.
My friends who mostly pug and only do heroic and M+ are already geared beyond Heroic Argus. Sure, they will get a few upgrades and TF Heroic pieces are an upgrade for them (let's not forget about pantheon trinkets and T21), but hey, is this even makes sense?
We overgear a new raid BEFORE it's release ??? That's truly some old god madness shit right here.