There are two MMM posts that had a massive effect on me. The first is the Shockingly Simple Math post. The other is the Low Information Diet post (along with the Circle of Control post).
I'm a lefty with a bunch of even-further-left friends. As you can imagine, social media in my circle of friends has been a cycle of outrage for the last two years. Every once in a while there are good, genuinely informative posts or calls to action. Most of the time, it's "but isn't this HORRIBLE" with no suggestions about what anyone could actually do about it -- just a scream into the bubble. It became exhausting, and at times painful, and even more it was distracting me from what I could actually do. Reading this MMM post really crystallized that for me and gave me a way to conceptualize what was going on and talk about it in ways that made it very easy for me to make changes.
So now? Drastically minimized social media time. I read the news on my own (because I want to be informed) and end up much better informed than I would be through the social media bubble, because I get a wider variety of viewpoints and sources on numbers, and better able to make decisions for myself, because I read so much less emotional commentary. I also have straight up more time *and* more emotional bandwidth to do things like call my senators and volunteer -- things that are absolutely within my circle of control, but that I was neglecting in favor of witnessing a bubble of outrage.
I can see how that post can be used to justify disengaging and avoiding conversations and work that are difficult and unpleasant. After all, there are people who think that if they can't completely solve a complex national or global problem through their own individual effort, then any effort is futile. But if you change your information diet to focused intake that prepares you for the types of action that one individual can do? Better for you AND for the world.