AAD is hard-left, yes, but I don't think the change has been that apparent in Old Atlas. It's just that the GOP has been more split.
Honestly I don't think this place is hard left at all. Not saying I think it's moderate either, but hard left is a stretch. Reading actual leftist media and then this forum, it's hard not to see the difference, imo. Though, I guess how far left it is sort of a subjective viewpoint. Depends where you think the center is.
That said, if center-right/right-leaning individuals keep leaving, then that would be a shame. I like the discussions here and turning into a liberal echo chamber really doesn't seem like a stimulating future for Atlas.