@Xkeeper
I think the "Read More" button is meant to get the use to enable JavaScript. Some users disable JavaScript for privacy reasons until the user initiates a script themselves. So, the "Read More" button runs a script that loads the rest of the content, but doing this allows the page's tracking scripts and advertising scripts to run too. The content doesn't load unless the host can make money off of it.
@hitstun the content is already there, just hidden, so it's not that. you can disable networking and it will still appear. i think it's for metrics/tracking, as you do