Life is just different for some of us and sometimes that does pose questions for folks who aren't aware or totally misunderstand with conviction what it really is to be age dysphoric.
First off, as this is a matter of being more involuntarily child-like, it's not say kink connected even if you may keep things out of parts of it it isn't "age play" or cg/l and being age dysphoric you wouldn't be going to any kink clubs. I certainly wouldn't wish to.
There is no sexualization involved at all.
You just do those child-like things you enjoy and feel more confortable in yourself doing in an environment that would be safe for a child, where you could just play and maybe enjoy the company of like minded people but everybody there is in law an adult.
While we share those same interests and do feel much younger than are years we do understand and respect why spaces based on chronological age are appropriate as none of us would want what at least in law are adults to have unsupervised access to children because we understand child protection matters.
Some of us may argue that because of things connected with us individually we too need some protection due to our vulnerbility but that doesn't alter the chronlogical childs needs.
There are issues sometimes around things like special events where the child version is more suited for us by way of interest to that of adults but how that is handled depends very much on how the event is organized and whither activities are individually centred or grouped.
It may be possible to keep one side of an exhibit just for people like us so chronological children don't mix with us or to put a special version specifically for us but the welfare of children and parents concerns need to be respected.