Agreed ,. and curating on only a common tag like music or art , with or without blurt in front ,.. can make one , with lot's of power , function as a filter on hot and trending , like a centralized point that decides who get's support to show up in the top 10 post's or first page of the tag .
It's how the whole thing is set up ,.. to keep control by power of a elite small group . Not necessarily a bad thing on it's self , but as always wide open for corruption , hate , greed and envy to grow on and destroy it .
So when curation is a to powerful tool compared to creating original content we might wanna bring some balance to that situation . Changing the 50/50 ratio is to me the first thing that comes to mind ,.. 20/80 might do the trick , who knows . ;-)