Wikipedia has never been a 100% reliable source of information, but the corruption and bias have reached crisis levels in the past few years, so much so that committed editors have abandoned it.
It was a great project that hit the ground running but now there are so many spindoctors, trolls, and corporate interests hijacking the content that it should be taken with a grain of salt.
ALWAYS confirm and re-confirm information that you read on Wikipedia, using external sources.
The Acta Pauli blog and Wikipedia trolls at Roger Pearse
The Decline of Wikipedia: Even As More People Than Ever Rely on It, Fewer People Create It | MIT Technology Review
Why Wikipedia Can't Work
Study: The Lott Page
John Lott's Website: Yet, more problems with Wikipedia
Philip Sandifer: Writer: Wikipedia Goes All-In on Transphobia
Wikipedia black helicopters circle Utah's Traverse Mountain
The Great Failure of Wikipedia « ASCII by Jason Scott
The Fairy-Tale Cult of Wikipedia