I've long stuck to just groups and messages over a web browser. But this extension can surely help people who just keep scrolling down the news feed and spend several hours a day on it without realizing. I found a similar extension for Firefox called Kill News Feed for Firefox [1], but it was last updated in 2014. I'll give it a try sometime.

[1]: https://addons.mozilla.org/en-us/firefox/addon/kill-news-fee...