This is actually fun Duncan lore. He was initially banned on the DuncanCantDie account on twitter for some time. This was his account to get around that ban evasion. This was during his fight with Blaine from the pokemon/nintendo community. This is why he feels he can throw is nonexistent weight around so much.
Also, would not be shocked to find out his wife is a loli. With how aggressively he went after loli's after the Nappy stuff came out, he was coping with the fact he knew a child predator was on the loose and did nothing about it. Probably a way to hide more guilt of his by dating and then marrying a closeted loli. Its too bad her twitter is hidden, otherwise she could get a thread too