At first it was all about presenting data in an original looking way. In the end it was about pushing political ideas in your throat using a plain bar graph. It was not about sharing something interesting you found but about taking advantage of a captive audience.
That’s how most subs end up. They have a great idea but eventually you’ve posted all the cool things. Now, you don’t really have anything cool to post that’s on topic and the sub goes downhill. Seen it happen so many times