While this will probably go nowhere, you do have to be careful. At a certain point, various authorities begin to take this seriously. There was another BB where some poster (a male) went on and on about Bob Baffert, and at a certain point, Baffert or Baffert's attorney called the authorities, in part I believe because Baffert was going to be racing and present in NY near where this poster lived. They found out that the poster attended the races and even though he never threatened to attend and confront Baffert -- they took action! This guy got contacted by the authorities, and I believe a cease and desist order was issued.
Be careful. One person's joke is another person's fear.