Yes, TFS is overall a survelleince produce for managers. However, that has nothing to do with the wiki implementation included with it, which is quite good. Don't throw the baby out with the bathwater.
I found it hard to use for the primary goal of a wiki: allow contributors to contribute. Wikis need diverse SMEs and it was hard to get SMEs to understand how it worked well enough to contribute and edit content, much less organize. Was able to do this with confluence, mediawiki, and tons of other wiki sites
