It's the same issue that's been plaguing ED for years.
If we take the Thargoid Invasion, FD had years to prepare for it; In the years leading upto it it, to invest some mechanics and gameplay into the game that could then have been leveraged to make the most out of this event. But instead they spent effort on bolting on all too often shallow gameplay elsewhere into the game. So come the invasion what did it bring to the game? A missed opportunity.
And the "Interstellar Initiative" is simply highlighting this same problem by trying to make the most out of 3-4yr old gameplay mechanics which at best were shallow even back then!
Space games back in the 90s have more involved gameplay mechanics that ED does not even five years on from release. And Powerplay, Missions, CGs and more are suffering because of this lack of depth in gameplay mechanics, so there's little to utilise and leverage to make them more engaging and involved.