Board Thread:Support Requests - Community Management/@comment-2165118-20161226033419/@comment-168424-20161231194813

Yeah, we have no idea which wiki you're talking about, so it's all hypothetical.

The short answer is, yes an adopting user can make massive change to a wiki. However, a wiki with 5 pages isn't really worth worrying about and the founder clearly didn't care that much about it.

Compared to wikis that split into two or more competing wikis on the same topic which divides effort and creates tribes, what you mention is pretty minor.