Imgur is in the same boat. It was a younger, energetic social network and the comments were mostly whimsical. I used to enjoy perusing its frontpage. Now it's heavy on political spam, talking points and general political propaganda, more or less cloning the descent you see on mainstream Reddit (plenty of niche subs are still great and mostly free of politics). I think it largely mirrors the manic obsession you see in certain parts of the US culture to hyper focus on politics 24/7.