You've done nothing wrong. If the children thing could find any brain space, it was because liberals were "tolerating" trans people. If instead they really felt and understood gender as a social construct and a way to express oneself, and relate to others (or whatever your transfeminist definition of gender is), then there's no way to go "too far" by teaching that to children, or just showing the diversity that develops out of it. "You've gone too far" sounds something that a zookeeper says to a jailed monkey who many smiled to when jailed, but became angry and upset when the monkey wanted to go out through the bars and be treated equally.
My point is: a shallow opinion for support, can become a shallow opinion against, in a short time. Gotta keep fighting.