Lawks, it's much simpler than that. To Pinocchio's plaintive desire to be a real boy, add the Q+. Back in the 70s & early 80s, PIE had successfully conned organisations like Liberty, as well as many politicians who ought to have known better, convincing them that "paedophile rights" was a liberal & liberatory struggle, but by 1984 they had lost that support, members had been subject to numerous prosecutions & the organisation fell apart.
Just a few years later, a group of very extreme BDSM fetishists lost a series of court cases (including at Strasbourg) thereby establishing that, in the UK at least, there are sex acts to which nobody can consent, basically because they cross the threshold of grievious bodily harm.
Both of those groups were comprised of people motivated by a paraphilic disorder, just like the AGPs. Men, & it's almost always men, who suffer from these disorders live lives dominated by their paraphilia, they are incapable of accepting that their sexual goals are wrong, or that the legal prohibitions & social taboos against them should stand.
Both groups have strategised for years to find a new way to force the State to indulge them, trans & "Queer" politics are a godsend for them. Now, the T has plenty of paraphilics of its own & far too many trans people assume a right to violate the social & sexual boundaries of others in pursuit of "validation" [waves at the oxymoron, "AMAB lesbian"] so the Q+ was inevitable, & unlike the old gay liberation movement, nobody takes out the trash so it's easy for the guys who get thrills from cutting body parts off their "slaves" & the plain old child predators to wrap themelves & their objectives in a Progress Pride flag while intoning thought-terminating clichés like "AccEPtaNcE WitHOuT eXCePtiON" & telling any opponents or ditherers that they are evil bigots who want trans & Queer people dead. Remember, most normies still mistakenly think "Queer" means "LGB".
The groups mentioned above are far from the only bad actors in the coalition, some don't even realise the other groups exist. The less informed & more naive an "ally" is, the more useful they are, because such people shy away from asking why Admiral Rachel Levine successfully pressurised WPATH into removing lower age limits for "gender affiring surgeries", & from reading the Eunuch Chapter in WPATH's SOC8, & from understanding what lay behind that chapter (a long collaboration with The Eunuch Archives, the Internet's oldest & largest forum dedicated to castration fetish).
Nobody really wants to know that respected senior academics & captains of industry, perhaps even one's own friends or rellies, while away their free time penning erotic fiction based on forced castration, often of little boys. I wish I didn't know it because I want to live in a world where such men don't seek out others with whom to share their repellent ideas but instead seek out & receive effective therapy. Others shy away from the knowledge because any engagement with the topic gives them the ick. Yet others are determined not to know because to know would shake their conviction that they're Good & Sophisticated People, allies to the vulnerable & defenders of the downtrodden, rather than the stooges & Useful Idiots they really are.
There are lots of other special interest groups to whom the TQ+ pursuit of "absolute bodily autonomy", at any age, is useful. For example, body modification itself can become an obsessive compulsion, & a sexualised one. There are reasons why something as mundane as a medical supply company might find the TQ+ promising in revenue terms & therefore worth supporting.
The coalition is unspoken, its elements often disguised, even firewalled one from another, but they work together indifferent to any other objective but their own. The stress laid on being an "embattled minority" imposes a kind of omerta, & people with an obsessive goal are not famed for their second order thinking. All this sails along on the tide of allies' carefully-curated ignorance.