Because if it's "religious freedom", it cannot mean your "freedom" to suppress others, who also must have freedom, religious or not (religious freedom includes the right to not be religious or to not be in your particular religion or to not agree with your doctrines).
If you mean sex education, it never was "LGBTQ propaganda", just like awareness about the existence of human diversity was never promotion. You're starting with false deceptive premises.
Children exposed to the LGBTQ? Even if you try to hide it from them, they'll meet some and/or may be. And that's the actual reason that you're swimming against the world, fighting about it, especially among yourselves.
Most parents we talk to simply find it to be disgusting perversion that harms children
That would be you, not "most parents".
are too cowardly to use it
Or do not share your hate and have the guts to let you know, or to live their lives without you being able to dictate how they should be.
“opt-out” nonsense.
Well, not being educated can be harmful, leading to ignorance, internal conflicts and confusion, xenophobia, unrecognized abuse, STD transmission, unwanted pregnancies, unsafe abortions and infanticide, etc.
left’s absurd talking points
Facts are not "left talking points", even if you politicize them.
pornography (and most certainly LGBT pornography) is destructive to everyone, especially children.
I don't see sex educators arguing that children should have access to porn. So you're a liar, too.