Magazine makes sense in the bigger picture when you think about. Let's break it down.
Microblog -> post. Makes sense you are posting a micro blog.
Lemmy has no concept of microblogging. So is fine using community and post naming.
Now why magazine? If you can't use post then you need an alternative and that's where article comes in. You submit an article of 4 types but what should these be in. You probably could get away with collections but something that also has articles, a magazine.
Qed magazines name (note all of this is completely made up and my justification for magazine)