Sounds real enough, I haven't heard any conspiracy theories popping up yet. But we all know what happened to Alex Jones after he raised questions about Sandy Hook so maybe people are just afraid to raise questions.
But "transgender" and "school shooter" seem to be a natural pair like peanut butter and chocolate, or maybe milk and cookies, so to me all signs point to "should have been in an insane asylum rather than walking free" coupled with "parents who should be as guilty as their kid".