They aren’t.
But they are a group particularly targeted right now, and targeted by legislation, and targeted by the same religious-social-political faction pushing this legislation even if this particular piece of legislation doesn’t overtly target them, so…its reasonably to pay particular attention to how this legislation affects them.
because they're often the first group these legislations aim at. It's no coincidence that the state in question is Utah, effectively run by the Mormon church with a strong interest in censoring youth access to the internet.
So no it's not just the gays who have to fear their parents.