The problem with Pride* is that it's shifted from LGB to queer. Transgenderism is just one glaring symptom of queer but it's part of a wider agenda.
Queer is all about transgression and being against normative anything. Queer is antithetical to safeguarding.
Either Pride is a queer event where you can all dress in rubber and let your arses hang out - in which case Mermaids, NSPCC, Scouts etc. should not be part of it, everyone should be made aware it's not a suitable event to take children and ordinary people who live or use spaces on a pride route should be protected from having to witness your grim sex hobbies ...
Or Pride is about LGB people having the same rights as everyone else, a commemoration of those who fought for those rights, a celebration of rights gained and a protest against continued infringement of those rights, in which case it is absolutely suitable for children so just don't turn up in your rubber suit and doggy mask or any other fetish outfit. Put it away. Your fun-sex parade is not inclusive if it excludes ordinary LGB families.
You can't have your cake and eat it.
*This isn't the only problem with Pride, there's also the rampant lesbophobia which is another symptom of queer: lesbians must not be permitted any boundaries. Boundaries are bad, m'kay 