There’s nothing wrong with learning about gay people, in a respectful way, at school. In fact it should be taught. The likelihood of children of this age knowing about families or couples who are gay is strong. The point is that a bookshop dedicated entirely to gay people is not age appropriate. Have the staff veted every book on the shelves for suitability? What exactly is the point of going to a bookshop dedicated entirely to books about or for gay people anyway? What are the children supposed to learn from such a shop? And what are they going to learn at the museum? The link shows mainly pictures of people who are supposedly gay. What are the learning objectives for such a trip? I should have thought that learning to respect everyone, whatever their sexuality or other difference is what is important here.
In addition, what of the millions of gay people who don’t want to be pictured in a museum like some sort of freak show. My son and his partner live very ordinary lives, wear very ordinary clothing, do not take part in any ‘gay’ events, and try to bring up their child in a very ordinary way. They couldn’t be more ordinary if they tried. They are part of our loving family. I don’t think they would want to be pictured in a museum as if they are freaks. They are not.