The problem is that reddit mods are self selected from within their communities by the other mods in that community. The quality of the moderators varies wildly and most subreddits are not run very professionally (obvious exceptions like /askscience exist).
Sure reddit has overall mods but they do not usually get involved and communities manage themselves which usually leads to a lack of coherent policy in regards to what is acceptable and not.
Sure reddit has overall mods but they do not usually get involved and communities manage themselves which usually leads to a lack of coherent policy in regards to what is acceptable and not.