I remember having similar problems with wiki regarding stem cells and cloning back then. It has been my recent experience, though, that they are very concerned with the credibility of the information posted on their web site, and they present different viewpoints on controversial issues and they ask users to help improve articles. Here are two examples:
https://en.wikipedia.org/wiki/Stem_cell_controversy
https://en.wikipedia.org/wiki/Christian_views_on_cloning
And when it comes to matters which could pertain to Roman Catholicism, then behind the scenes Romanists gang up and try to (and often succeed) in ruling the roost, working at it seemingly full time.
Which renders wiki in regards to religious issues which touch upon Roman Catholicism something less than entirely accurate, many times for reason of what is not included as much for what is -- and how what is included is worded.
Some of the RC'ers who focus diligently upon manipulating wiki entries may even be paid to do so for all I know.
Check the citations for source(s) of info, follow links provided, and ferret out/search out other info where no link at all is provided.
In that last instance, careful examination can at times turn up RC apologist types (sometimes in guise of historian) as sources for a this, or that, which is chief source of tone for some segment or another of an entry.
After some amount of tone-setting manipulation, it would be an uphill battle to try and introduce information which would serve to refute already published opinions and points of view. The control-freaks are often good at hiding their hand, so to speak.
They'll delete others entries, then in backroom discussion, impugn the sources (if at all possible) of anyone who dares disagree with themselves, while ballyhooing some of their own biased sources, whenever their efforts of controlling and deleting are challenged.
It's sort of like this forum can be, in that way. Shoot the messengers, one way, or a dozen ways over.
Wiki can be good, but is subject to change and revision, and is only as good (and fair) as the inputs.