Thats all due to their "karma" bullshit. It is a truly orwellian concept. People have fear of being silenced so nobody wants to argue with yes-men. Redditors always take one side of any hot issue and usually the top comment sets the tone. So it quickly receives 100000 likes and nobody would dare to disagree and instantly lose all of their precious karma points. So those who disagree will simply stay out of the discussion or would "agree" for the sake of driving their karma up. And every contrarian post will be reported and deleted. It is stupid and disgusting.