But MMs point is that if it were a SLGBT conference then he doubts that S people, as opposed to LGBT, would have been positively encouraged by the RAF, given time off, and funded to hilt, to attend, along with subsequent publicity....and I think he would be right!!
MM is talking about the kind of backlash and unintended consequences that positive discrimination applied to small minority groups can often generate.
There is no reason why minorities of whatever kind cannot be equal with the mainstream, but when that balance tips over so that they recieve preferential treatment....?? All that happens is that a positive, as opposed to negative, bias is created - the problem has not gone away, but its nature has been changed. Resentments, tensions, etc, will still exist.
What was it George Orwell wrote, "...all animals are equal, but some animals are more equal than others...."