New Jersey high school valedictorian had microphone cut when talking about LGBT issues

Censorship is an admission that facts don’t support your position. It also shows that many LGBTQ people have mental issues associated with their sexuality. It also shows what bad judgement the school leaders showed in choosing this person as valedictorian, trusting the person to be truthful with respect to the speech they would give, and then attempting to interfere with the speech when it jumped track.

Why would they choose a non representative person to speak to an entire graduating class? Is that person more important than the people in the audience?