I'm not sure if that's the intent of everyone backing this; I think part of it amounts to parents who are legitimately worried. I may not agree with their means but I can understand that. I haven't personally met anyone who talked about baptizing the internet but that doesn't mean it isn't happening, and I'd oppose that.
I strongly agree with you on escapism and consumerism. I see pornography as a nasty end-stage manifestation of this, but not as the root issue. I've also seen peers spend way too much time rotting in front of netflix or tiktok or videogames, or addicted to shopping, or spending their money traveling to highly-instagrammable destinations and posting it. I have a huge beef with what you're describing, very true, and consumerist hellscape is a great characterization. Sticking with the drug analogy, I think it's like cocaine vs. fentanyl. It seems like many fewer people can consume is "recreationally" without some level of harm if they do it repeatedly over time. I also tend to key on it more because it so explicitly pertains to what I see as some of the most beautiful and sacred elements of creation (love, sex, marriage). But it's absolutely one manifestation of a greater issue.
I tend to agree with you that "purity culture" is bad and that America has a weirdly-victorian air about it that almost seems to tempt people more. I see alcohol as another example of this; I'd prefer my kids didn't drink until they were older and in the right place/at the right time, but our current set-up just makes most kids get blackout the first half-dozen times they drink.
To be honest, it's still not something I'd be comfortable sitting and discussing personally, but I think there's a difference between "not polite dinner-table conversation" and "God forbid anyone mentions it ever."
I agree with you that lawmakers don't care one whit about children, families, or people. I wish some of my fellow Christians weren't so quick to assume that "their guy" is actually going to fix anything, and see it as a way to disclaim responsibility for working on their own families and communities in particular. I think I've noticed more of this amongst my peer group, a basic distrust of particularly the federal and state governments across the political and ideological spectra. I hope this drives us to focus on fixing what we can. Work on our families rather than calling state assemblymen, work more to feed our homeless rather than expecting the feds to implement a perfect nationwide solution. And I hope rather than politicization, Christianity in America focuses more on the Second Great Commandment, "Love your neighbor as yourself."