Yeah, like Amoebas you raise a valid point on the X-Men which to me makes complete sense. For me with the Legion I've read and the multiple reboots until the current series it has always been the young just starting out Legion so each reboot did have a similar theme. I do not plan on dropping the current series, I have faith in Levitz, and the Legion but I cannot deny sometimes it is hard to get through.
I didn't buy this issue, there's something not compelling to me besides just the art this time. But especially referencing the Great Darkness Saga ties it to that early run, I suspect in part to even further dismiss the DnA and Shooter2 runs but also to try and recapture those fans of the Levitz period. And if you'd read mainly the reboot and threeboot, that would be a tough sell, I agree.
(FTR, I read the X-men from the beginning to the '90s so I know them too--but skipping the '90s but VERY confusing when I first read the book again around 2000.)