Hi there! Sorry it took so long for me to see this; the Discussions aren't used much and it's not as easy for me to keep track of as the rest of the wiki is.
I think we had plans a while ago to split up Vox Machina's vestiges into their own pages, with the current Vestiges of the Divergence page being used as sort of a hub. But we got distracted by other projects, then the campaign setting came out and all the new vestiges got added, and I guess those plans just sort of fell by the wayside.
I still like the idea of each vestige (or at least the major ones, like VM's) having its own page. So...I guess if people are interested in that happening, that'll be something we can work on in the future.
Wikipedia's definition of a stub is "an article that, although providing some useful information, is too short to provide encyclopedic coverage of a subject, and that is capable of expansion." (en.wikipedia.org/wiki/Wikipedia:Stub)
In my own words, a stub is an article (usually very short, but not always) that lacks enough information to properly explain the subject. However, an article can be very short without being a stub if there is no more information to add.
To be honest, a lot of the "stub" articles on this wiki need to have that heading removed at this point. I've been meaning to go through and do some cleanup on that but I keep getting distracted by other projects.
New pages on this wiki tend to get the stub heading by default, but a lot of users are understandably nervous/unsure about removing it even after a good amount of content has been added, which is why many of the more fleshed out articles are still labeled as stubs.
If you see a page that you think looks pretty good, feel free to remove the stub tag. Literally 70% of the pages on this wiki are in Category:Stub, so it's really not helping with organization. Besides, there's no such thing as a "complete" page on a wiki; there will always be something new to add.
(this post ended up a lot longer than I expected. my bad, I tend to ramble a bit)