I'm going to guess his next chapter is about how money ruined the media and politics, which is "why you shouldn't write about these things" -- because the people with the loudest voice have the most to gain from the polarization of the media. Again, this is pretty obvious. The loudest voice becomes the only one you hear in an echo chamber.
It was insightful the first time I read it from Socrates and Aristotle. But at this point it should be common knowledge for anyone interested in philosophy (literally: the study of knowledge).
As far as I can tell, other writings on the topic haven't had any noteworthy effect in rectifying the problem.
Do have any insights on what we should do about the situation?
As far as I can tell from reading history, it's always been like this. We just haven't had a massive mutually-destructive war in anyone's lifetime to remind us why we should work together. Old soldiers are the best anti-war advocates there are. Because I'm pretty sure that's where all this is headed.
At the risk of sounding glib, this style of thinking sounds a bit too much like the proverbial "we've tried nothing and we're all out of ideas!" I mean seriously, while lots of people are drawing attention to these old issues with a modern twist, has anything really been tried to fix them? Perhaps it's going to take some time to get our act together at the political level, but is there anything stopping communities like this from putting on our thinking caps and seeing if we can come up with some new and useful ideas?
As it is, candidates in the middle can't get elected. Two dominant parties is an entirely predictable result of FPTP voting. Approval voting (or ones that tend to elect the Condorcet winner, which also should be the first choice of the median voter) would solve 90% of the problems cited in this article.
https://www.vox.com/platform/amp/future-perfect/2018/11/15/1...
http://asitoughttobe.wordpress.com/2010/07/18/score-voting/a...
And I'm not convinced "multiparty" is what we want. I think we'd be better off if parties had far less significance. Special interest groups? Sure, they'll exist. People who advocate for, say, bigger vs smaller government, more or less military action abroad, antitrust vs laissez faire, etc. But they don't have to nominate individual candidates...that's really only needed when you have a system that has vote splitting.
But bambataa did not refute anything from the article, just saying that it doesn't contain anything "big", without actually reading it. I think that's a fairly different situation than the one you used as a example.
It would more be equal to "You can't criticize religion if you haven't read anything about it", which I think it fine. You have to at least understand what you are critiquing, otherwise you're basing your arguments on something that you could have misunderstood.