The user Peak Debt wrote an article on the cryptocurrency Skycoin that was rejected four times for appearing promotional before it was approved. Peak Debt denied having a conflict of interest. After the article was approved, CNMall41 nominated the article for deletion on the grounds that the news articles about it are from industry publications. These include a news outlet calling the currency a scam and a report of the developers being kidnapped and held for ransom by their Chinese contractors, which would seem to make it notable in my opinion.

Peak Debt argued against the deletion so MER-C topic-banned Peak Debt for "gross failure to understand what constitutes a reliable source." Softlavender then struck the comments of every user who read about the AfD in the news and came to argue against deletion, and then got Peak Debt indeffed for "rampant sock/meatpupetting at AfD, and now he is outright trolling."

https://en.wikipedia.org/w/index.php?title=User_talk:Peak_Debt&oldid=867698212#Conflict_of_interest_disclosure_and_paid_editing

https://en.wikipedia.org/w/index.php?title=Wikipedia:Administrators%27_noticeboard&oldid=867755283#Appeal_topic_ban

https://en.wikipedia.org/w/index.php?title=Wikipedia:Articles_for_deletion/Skycoin&oldid=867770588