I don't want trans people to be demonised
Neither do I. However, you can't defend the rights of people in a specific group if you can't explain who is in that group or why their rights are threatened. This applies to trans people as much as women.
Yes there are a few cases of evil people misusing trans rights in order to be abusive, e.g. convicted murderers abusing people after falsely claiming to be trans.
Self ID makes it impossible to say that anyone is 'falsely claiming to be trans'. Could you explain why these people are 'falsely claiming to be trans'?
There are also examples of prisoners claiming to be Muslim in order to have what they think is better food and more free time
To be honest, I think it's also difficult to claim that somebody does or doesn't hold a particular faith, and I'm sceptical that Muslims get much better food. However I can at least define a Muslim as somebody who follows a particular doctrine. How would you define gender and why do you think people of different genders should be treated differently?
paranoid minority
I'm not frightened of trans people, I am frightened of loss of the ability to protect sex based rights, which are needed despite, not because of identity.