Bye

can anyone in here explain leftist mentality?
So my question is related with this article from UK (https://www.mirror.co.uk/news/uk-news/breaking-woman-posed-teenage-boy-21251766)
Under uk law if she says that she is a boy. she is a boy. but some how they are accusing her of lying .
I do agree with the acusasion I don't know how they arrived to it though