YANBU. It’s really worrying and not a good sign that it was obviously signed off by the council.
The group that did it have put out a mealy mouthed statement, but it’s clear they don’t see what the problem is.
There is a growing problem with some groups trying to access children through public spaces, eg drag queens in libraries; normalising adult sexualised practices. It’s creepy AF.
The Dept for Education and MHCLG urgently need to put out stringent guidance on this.
Our children are being groomed. Many schools now totally outsource their sex ed classes to some of these dodgy orgs too- make sure you ask to see all the materials your children will be shown in advance.