I can't claim to speak for OP, but am also against most tracking. I would also tend to think that being against first party tracking would be an unwinnable battle. It also leaks less data than third-party tracking, since the third party can see your activity across multiple sites whereas first party can only see your activity on that site unless it's aggregated through a backend service (another poster mentioned the ability to upload server logs to GA). No matter what, they can see what you load from their site.
Getting to first party hosting of more intrusive analytics (scroll location, etc) I think rather than disallowing certain scripts/URLs to run, you have to get back to behavioral-based blocking. Doing that in an environment that you allow any JS to execute seems tough since sandboxing something that can update the page based on location can "talk" to another part that can report back to the server.
If you don't like intrusive first party analytics, just stop all JS.