Think of Wikipedia as a witness in court. Once they are caught lying when asked a question the rest of what comes out of their mouth is suspect. They have been discredited and no longer considered trustworthy as a witness.
An interesting case is that of the well known scientist named Boyd Bushman. He held many patents in aerospace. One of which was the stinger missile. Before he died he did a video with an investigator. He talked about how they did reverse engineering on alien technology. Once he went public with this Wikipedia completely changed their bio on him. Completely ignoring all of his accomplishments. They attacked his as a faker and a fraud. Even thou many knew he worked in that industry. See below for what they know say about Boyd Bushman.
Wikipedia:Articles for deletion/Boyd Bushman - Wikipedia