Ravenous Bugblatter Beast of Traal
No, it really can't. At least in 5e. Since background is currently busy describing background. We aren't giving up being a sailor or outlander or urban bounty hunter or mercenary vet. And we know this because they have said it's going to be compatible.Backgrounds can define a culture.
No, we still need to be able to say I'm the apprentice shaman (acolyte) or my orc tribe, or the smith (guild artisan) or what have you.Different orc cultures correlate with different Background assemblages.
Zeroing out background to replace it with culture is a non-starter in anything compatible so we know it is false.