Resource allocation is more concrete and direct than discussions about how society ought to be arranged, although you’re right that you allocate resources in order to achieve a desired social outcome.

Discussions about how society ought to be tend to be vague and aspirational: “society ought to be more just” is more vague than “we should spend more money on these programs”. The latter might serve the former, but it’s also specific and actionable, which is why I draw the distinction where I do.