The inspiration is this simple quote: "The chief task in life is simply this: to identify and separate matters so that I can say clearly to myself which are externals not under my control, and which have to do with the choices I actually control." (Epictetus)
I held this resolution for about 5 months and it was profoundly glorious. It's not hard. Treat current events like Game of Thrones spoilers. Focus on what you have control over. Be frank with others that you are taking a break from the news cycle. If your results are anything like mine you will find yourself calmer and able to concentrate on what matters. Your mind wont wander to externalities you don't have control over.
At the end of it, you can go read Wikipedia for 30 minutes and be just as caught up as anyone else because you know the end result of the news cycle instead of suffering through it as it happened.
I know it’s extreme but it’s the reality. For someone who is impacting by politics (say lost their jobs due to COVID), you can’t just stay on the sideline and ignore it.
You just have the great privilege of letting other people take care of that dirty work.
Is taking a news diet good? Absolutely. Lots of crap out there and a mental break is needed once in a while. But ignoring the suffering of people around you is just bad.
And who are the "people around you"? With the internet that could be half the damn world. It sure is a privilege for you not to have to worry about injustices in the Middle East.
I'm not saying people should be selfish, but I don't see how what you're suggesting is productive either. Even the most well meaning person on this planet cannot possibly have an impact on all these different issues. Pick some areas you know you can contribute to and focus on that.