> It’s banning access to harmful content for people under 16.

Even the most comically overt authoritarians will use justifications like this to ban content.

> One morning I logged into Reddit and saw a video of Charlie Kirk get his head blown off.

Then I think you may have seen a fake video. No such thing happened to him. If we're discussing serious subjects such as censorship and deaths, avoiding hyperbole to falsely bolster an argument is probably best.

> I’m really glad my 12 year old daughter didn’t have to see that…

Why would you give your 12yo daughter unrestricted access to Reddit, as a parent? Why must the government stop her, for you?

Also, since that already happened, and government restrictions weren't in place, and she didn't see it, clearly you've just disproved the need for those restrictions to avoid that outcome; your daughter didn't see the harmful content, despite there being no government-mandated restriction.