Perhaps, and, as you pointed out, the one-armed creator is at odds with the UNSC. Judging by the look of the MC, he may be in the same boat at this point.

Reach just seamed potentially relevant because the covenant don't glass Forerunner stuff, and Halsey's lab was located right by a bunch of Forerunner stuff. Perhaps it is relevant, perhaps not. I was just thinking it may be what led him there.