I strongly disagree with his viewpoint. Labels have the purpose of identifying traits that, to a greater or lesser extent (and regardless of whether people like it or not), define our identity both as social beings and individuals. Sexual orientation hasn't been a sensitive issue in Western societies due to a sexually repressive Judeo-Christian religious tradition, that views sex as a purely functional act that ought to be devoid of any pleasure, because pleasure eludes to freedom and the disruption of social mores. In Ancient Greece and Rome, homosexuality itself was seen as something odd, and men were expected to engage in relationships with either youths or men of an inferior category as part of a dominant/subservient exercise of parental control. Truly homosexual men (i.e. those who exclusively wanted to engage in relationships with other grown men), were spoken of with extreme derision and ridiculed as freaks. Even in the more "accepting" Oriental societies like China or India, purely homosexual behaviour was seen as unnatural, and same sex relationships were only tolerable as accessories to the healthy sexual appetites of powerful men.
Consequently, gay people have always been outsiders (even women, who were also severely punished for being gay). We haven't excluded ourselves from society and asked to be seen as a unique community exclusively defined by our sexual orientation. In fact, we have had to build our own community as a response to the brutal rejection and violence that we've always faced from the rest of society, which deems us anomalous just because we do are not capable of complying with the patriarchal view of sexuality as both an economic and military need, and an exercise of male dominance over lesser beings. Which leads to the next point: men have always been terrified of same sex desire, because they perceive it as feminizing and thus, a compromise of their masculine superiority. Homophobia is rooted in misogyny and an absurd and irrational contempt for women and the qualities they embody; not in the byproducts of the 1960's Sexual Liberation movement which, as a product of Feminism, sought to lend a voice and give representation to the voiceless, oppressed and ignored. If men don't want to be gay and are ashamed of being homo or bisexual, it's because of their inability to emotionally deal with their own subconscious virulent prejudices about the nature of femininity, not because a hypothetical "gay establishment" is forcing them into adopting any particular identity against their will. In short, they are the ones who are f*cked up, not the rest of us who accept ourselves as we are, and are willing to try to live as healthily and happily as possible as gay people.
This ridiculous notion that every concept must be challenged if it doesn't suit your very personal needs at any point in time that Post-Structuralism promoted, has done more harm than good: it has given people the ability to present arguments against not only social phenomena, but the human condition itself, just because they are incapable of accepting reality as it is, and feel that they are entitled to creating their own lexicon, to define their own rules. Well, no: labels have a function and they are meant to give information devoid of any moral qualities in itself. However, if certain individuals feel threatened by other people's (and their own) judgements, that doesn't mean that the entire semantics of our current modes of communication ought to be changed. Going to therapy to deal with their demons would be better than trying to demonize labels - and the people who both accept and understand their ductility.