You're talking about general gender fluidity. My comment was geared specifically toward the subject: children and gender fluidity. You are correct, and that article is correct, but in this specific context, no one is talking about these things. We're referencing what Putin said, which is:

Putin, who told the Financial Times of London newspaper in 2019 that liberalism had become “obsolete,” has loudly advocated for what he considers to be traditional family values. In his Thursday remarks, he said the notion that children are “taught that a boy can become a girl and vice versa” is monstrous and “on the verge of a crime against humanity.”