I dont know all of the people who work on the zine, nor do I know them all well, but they are people with other things on their plates. Organizing a volunteer project with multiple people who are at the same time in school, work, et cetera, and who can never meet in person, takes time.
Even if there didnt have valid reasons for slowness, the quality of each of the zines thus far seems to earn the project credit. Would I be sad if they came out faster? no, but I understand why they dont, and I appreciate the people who contribute.