Well basically we don't want to ban anyone, whether we like them or not, from trending tags and by default we show you selection of most popular tags in Steem. Only when you customize your tag selection you will get the real experience of our platform, for example, if I am subscribed to #steemdev, #open-source, #design and #art, I don't ever see haejin or sweetssj in my trends.
It may not be perfect for now but we are open to suggestions.