I'm with Tracks on this - God knows pretty much everyone in the public eye is fair game for the cheap shots, satire, lampoonery and sometimes spitting bile that gets aimed at them regularly. Ann Widecombe's teeth and professional virginity, Denis Healey's eyebrows, John Prescott's weight, and so on. But 'dyke' isn't a fun term, especially coming from someone presumably straight - it's one of ridicule, along with muff muncher, and those for non-straight males are easily as pejorative and worse, reflecting mostly straight men's concerns about 'the third sex'. Making fun of someone's teeth or hair isn't in the same league as belittling a genetic make-up they can't help. Sniggering about someone's sexuality is as irrational as sniggering about someone being black-skinned or albino.
As for gays portraying themselves as victims, perhaps AA Gill needs to get out a bit more - there are still regular gay bashings and murders by straights in the UK and in over 70 countries in this, the 21st century, it is an offence to not be heterosexual, while in five you can be put to death for practising homosexuality - it's a capital 'offence'. And let's not forget Herr Hitler's charm offensive towards them, the mentally frail, the Romanies, and the Jews. Yes, they are still victims of a world which very much fails to 'embrace diversity' - thus eminent gays do feel it necessary to keep showing the world they won't hide their 'condition' - although many religious groups would rather they were lynched for their deviancies, and condemn them to Hell anyway. That's where the world stands on being different.