At the risk of being controversial I suspect it is because football is one of the few areas of society left where non hetrosexuals are still fearful of the reaction if they were to come out. In many respects it is no different to the 'kick out racism' campaign. Neither should be necessary, but until football catches up with the rest of society the campaigns are a necessary evil. It matters not what an individual's prejudices are, equitable treatment regardless of gender, race, sexuality, age or physical impairment is enshrined in law. Even the RN and the other forces are now seen as excellent equal opportunity employers so it shouldn't be too difficult for football to get it's house in order- just need to provide an environment and management that is not dominated by white, middle aged , hetrosexual males.(and I am one of those!).