No worries!
They're no Larian, but I'm a fan of Owlcat too. Besides, a rising tide lifts all ships, as the saying goes.
Well it's particularly weird because Haunted One in actual D&D doesn't have either of those proficiencies. Moreover, D&D backgrounds give you 4-5 to choose from rather than locking you into a static 2.
I'm hopeful BG4 uses the OneD&D rule of making all backgrounds have mutable proficiencies, much like they removed static racial bonuses prior to release.