From what I understand people on The_Donald subreddit were accusing him of being a shill, so he edited his name in those posts to be The_Donald's moderators instead.
If you had guessed stupid political garbage mixed with internet trolling, congratulations you get a cookie.
Actually the people on /r/The_Donald branched off and opened another discussion that led to the Pizzagate (accusing a restraunt owner, Hillary Clinton and others of being pedophiles). And when /u/spez deleted the Pizzagate stuff (people were actually harassing the restruant owner), the mods started abusing and accusing /u/spez of being a pedophile.
And also take note that witch-hunting is prohibited on reddit and can warrant legal action.
If you had guessed stupid political garbage mixed with internet trolling, congratulations you get a cookie.