Nothing inherently wrong with the phrase, however making it the front saying for queer rights was a bad idea, as it does not address trans, intersex, and yes, aro people's issues. I get why it was used though, at least during the early 2000s-2010s, its simple and easy to understand for the average cishet joe who is unfamiliar with the community, and appealed to their basic values. Its also important to remember it was often used for same-sex marriage rights, so I think the problem was less the phrase and more about the fact that many (mainstream) LGBTQ activists tend to hyperfocus on marriage. But anyways, its the 2020's now, so I think it's time we start using other phrases.