"It wouldn't be acceptable to lie about any of these things to get into these groups."
This is key. If a group has been identified as needing defined category boundaries for eligibility for that category, allowing people to access that group that don't qualify for eligibility needs to be correctly labelled a safeguarding risk. Because, the boundary around that category would not exist if it were not needed and the group would be open to every person who wanted to join.
Safeguarding boundaries are not 'hateful' if they are considered legitimate under law in a democratically elected government that has been carefully audited and monitored so that the law is not considered illegitimately discriminatory. I think that there are many people on this thread who don't quite understand the difference between legitimate and illegitimate discrimination and categorise anything that they don't agree with as 'illegitimate'.
Hence the absurdity of bringing in language such as accusations of siding with 'Trump', 'far right', 'zealots' and on and on. That language really is absurd in the face of what has been decided.
There is a point where society has to have laws that allow legitimate discrimination such as excluding a group for safeguarding purposes from a provision, be that a service or a facility provision. This is not controversial.
If you consider it from a sports perspective, would any of these be acceptable:
A 25 year old competing against a 10 year old in a 10 year old and under category?
A 25 year old competing against a 85 year old in a masters category in the 85 year and over category?
A person who had 90% vision competing with someone with 5% vision in an event specifically for someone with that % of vision impairment?
A person who was a professional standard athlete competing in a novice only event?
A bicycle with an electric engine competing against a 100% human powered bicycle in the Tour de France?
if they are not acceptable, why?