I'm sorry if it's not my olace to say this, qnd I don't wish to offend anyone, but lesbians are gay, right? Maybe "gay" has once meant only "homesexual men", but now many lesbians call themselves "gay" so having both the "l" anf the "g" seems redundant. In fact, an even broader definition of "gay" may even encompass bisexuals, so gtq+ seems sufficient. But the word "queer" is also used as an ulbrella term for all lgbtq+ identities, so really, q+ seems like would suffice. Or if it has to be lgbt, they could at least switch the "b" and the "t" so that it can also mean "Let's Get This Bread".
Coulda picked a better headline then.
But for real though it's all a social construct anyway, and the definitions and perceptions will change. I think right now there's not a lot of agreement when it comes to individual identities, but most people will know what LGBTQ+ means as opposed to "GPT" for Gay, Pan, and Trans, which I just made up now.
Fun fact: in french ChatGPT sounds like "chat j'ai peté" which is "cat, I farted".