I think it’s safe to assume any highly evolved alien species will have moral constructs that support self-preservation.
Whether those morals extend to preserving other intelligent life forms (I.e. humans) seems unlikely since the prosperity of other life forms will inevitably lead to more competition for scarce resources.
The fact that human moral constructs apply to other intelligent species seems to be a bug that arises solely from the fact that we’re currently capable of out competing all other intelligent species.
This assumes that the hypothetical aliens draw (ultimately artificial and arbitrary) distinctions between themselves and other intelligent species. Who knows, they might consider us, another intelligent species, to be 'one of them' in some sense and thus deserving of protection.
1) Not really scarce on a galactic scale and 2) if different species' chemistry are radically different (and why wouldn't they be?) there wouldn't be competition even if habitable planets were scarce.
Whether those morals extend to preserving other intelligent life forms (I.e. humans) seems unlikely since the prosperity of other life forms will inevitably lead to more competition for scarce resources.
The fact that human moral constructs apply to other intelligent species seems to be a bug that arises solely from the fact that we’re currently capable of out competing all other intelligent species.