You know what would actually amuse me if angels get halos, or wings...
based on the human population. and the fact that very few concepts assume the angel population as greater than the human population... Certainly nowhere near the population of every human that has ever existed...
and if you assume it as "every time you do a good deed". We gotta some angels with thousands of halo's and wings.
So sounds to me like... reddit's looking to compete with say patreon etc... IE allow people to post content either early to payers, or release some things exclusively to payers.
Obviously the value of that will depend on how big of a cut reddit goes after, and assuming they don't try and move existing participant focused subreddits to it.