>>527838856
A common myth is that RoI was made by a B team, while A team was busy positive circlejerking themselves to death and creating a Destiny 2, which was a fucking failure from an artistic standpoint, especially coming off from the D1 circa Age of Triumph.
It was a whiplash for D1 veterans, to say the least.

I'd say the real reason is that nuBungie is too stupid and incompetent, so they can't port Splicers without getting buckbroken.