I actually have so many issues with this article that I'm not sure where to start!
Leaving aside the issue of trans kids for a minute and just taking the LGB bits, as far as I can tell Douglas Murrays argument comes down to "if it can be done, and some people want it done, then they should have the choice of doing it. " I can't agree with him there. For me there are some things which have such a great potential to harm communities that they should be banned even if some might freely choose them on an individual level.
If there's one thing rad fems have taught me it's that the concept of choice is at best loaded, and at worst impossible, when made within a system of uneven power structures. Murrays thinking may be in line with that of libertarians for whom individual choice is paramount even if it harm other members of society and actively support oppressive systems, but I can't buy into that myself. The number of people who would seek conversion therapy out of a feeling of obligation to their families, religious guilt, internalised homophobia etc and be tremendously harmed by it, would almost certainly out weigh those making a truly free and neutral choice.
Murray says that coercive control is already illegal, but he fails to appreciate how hard it would be to prove that this had taken place and also ignores the fact that someone could feel coerced into that choice without the coersion ever coming close to levels deemed criminal (for example just knowing that your parents were upset to have a gay child would be a sufficient motivator for some to seek therapy even if it they didn't really want to). Also, saying "coercive control is already illegal" sounds awfully like "it's already illegal for people to attack you in a toilet". It just doesn't sit right with me. And yes I know that the other reason he raises this is to question what a new law would cover that existing laws wouldn't, but I'll come back to that in another post.
Just as I don't believe that women can make a truly free choice to sell sex in a mysogynistic society where they may be coerced by circumstances like poverty even if they aren't coerced by an actual person, so I don't believe LGB people can make a truly free choice to undergo conversion therapy in a homophobic society where they may be coerced by circumstances such as fears of job discrimination even if they aren't coerced by an actual person. Even if some people did freely choose it, just having the choice available (and presumably the evidence of some people who have been "converted" and are happy about it) would lead to immense pressure on others to at least try it. Just as industries that commodity women such as sex work and surrogacy harm all women even if the individuals who choose it are happy, so conversion therapy harms all LGB people even if the individuals who choose it are happy.
He also says "harmful practices" are already illegal and links this with electro shock therapy in a way that implies it is illegal. It isn't, it's actually a treatment for clinical depression that is referred to by webMD as "safe", "painless", and "harmless". Of course that's because there's a clear and well understood clinical mechanism for its efficacy, but if the bar for permitted conversion therapies is set at "not harmful" then I doubt it would take much for this to be used as evidence that it should be included. My point is that the definition of "harmful" is not static and can be easily changed to suit political agendas. We've seen this with the clinical pathways for children with GD and I absolutely believe that allowing conversion therapy to be promoted as a neutral choice consenting adults should be allowed to make would create a huge incentive to mangle the definition of "harm" even further.
OK, I don't remember the rest of tee article well enough to comment further and I have to get my kids ready for bed, but I'm going to reread it and try to post again because I have additional thoughts on this issue.