Kids say lousy, mean-spirited thing. The words of a kid on the playground are not an accurate reflection of the conservative or Christian standpoint on homosexuality. Charity toward persons does not mean affirmation of sinful or immoral behavior. Love the sinner and hate the sin is what Christians are called to do. Embrace chastity is what those with same sex attraction or anyone outside of marriage (between a man and a woman) are called to do.
The word of a gay-rights activist that this happened, however, is meaningless.
Almost all "hate crimes" alleged to have been committed by preferred-group "victims" are made up. This absurd concoction breaks new ground, "false hate-crime by proxy".
Look for more of it if it has the desired effect.