I find Twitter useful by following accounts which tailor to my taste in information consumption. They typically broadcast very useful information, and stay clear of politics and especially stay clear of politicizing for brownie points.

Now, I can see Twitter being a very annoying place if all you are following are accounts which are looking to "engage" their audience and get retweets and mentions, etc., and try to be cool, set tone, influence, and throw signals --all of these mostly add noise.