The good thing about this is Bitcointalk can be removed from the blacklist of Wikipedia as stated in their
Blocked External Links page. And if you really want to add Bitcointalk as a source for your edits you must follow this steps as stated in the article, but I do think that a forum admin or moderator has more weight on the request based on the Bold text below.
Request that a site be removed from the blocked list entirely
If the site is on the meta blocked list, you must make your request at
m:talk:Spam blacklist. Requests here will be summarily closed.
If the site is on the local blocked external links list, then add your request
here. Please provide the following details:
1. The web address of the site you would like removed from the list (omit the http and www parts)
2. The reason(s) why links to the site should be allowed, and would benefit Wikipedia
3. The article or articles on which the links would be used
4.
If you are connected to the site, then please declare this at this point. Failure to do so will, if discovered, be treated negatively.Also in my opinion I do think that Bitcointalk is blacklisted as it is a forum site (a lot of forum sites are listed on the blacklist of wikipedia) and forum sites tend to have a lot of spam as well as unreliable sources that can't be used as sources (at least that is how Wikipedia views it). Just like why wikipedia is blocking off many blogspot sites as their information tends to be unreliable and is not worthy to become a source.