Whilst I'd call someone out on their hypocrisies over eating dairy whilst espousing a radical animal rights agenda and query their Britishness in relation to their tax arrangements, this is really very troubling and completely unacceptable.
HIV is now, to some degree, a manageable condition due to anti-retrovirals and wouldn't affect most people's work abilities, there's still an enormous amount of fear and prejudice around the world. If I was part of a business where my health was a key criteria for signing contracts, being insurable for travel and visa applications, then I'd be incandescent at any spurious gossip campaign which not only questioned my ability to take on touring schedules but which also attempted to label me as self-hatingly homophobic by dint of supposedly 'hiding' anything. Even more so if I had recently recuperated from illness which others now sought to lable as indicative of an underlying chronic condition rather than unfortunate one-offs.
One look at the situation in Africa shows It's absurd to claim that HIV infections are an issue of gay or bisexual activity. It's nobodies business what anyone else's HIV status is unless there's a negotiation prior to sexual activity. In some parts of the world there's problems with visa and border entry for anyone 'suspected' of having HIV, and it would enrage me to have to provide tests results to border guards of homophobic regimes due to some malevolent internet campaign. What's behind all this is blatant homophobia. It's deeply immoral.
Anyone who's ever had to deal with corrosive gossip knows how pointless it is to protest, as doing so only adds fuel to the flames. Even taking legal action in this case would mean agreeing to a potential invasion of medical privacy that most people would find completely unacceptable. I don't think there's any answer other than for people to express their disgust. Whilst someone may make generalised inflammatory and troll comments about celebrity chefs, microwaved children and concentration camps in a desperate attempt to resurrect their career and end up looking ridiculous, that's not the same as a targetted attempt to undermine a specific person's ability to organise their employment, insurability, travel and reputation.
The writers do this because they know that any formal legal response opens the door to more intrusive queries so will probably not happen, but that doesn't make it acceptable. Nor does trying to suggest some 'moral equivalence' between delusional troll comments to the media by a fading celebrity and a seemingly vindictive campaign to undermine if not destroy someone public persona and ability to travel freely around the world.
regards
BB