You're correct. But I would argue there are more areas of agreement than you might think. Areas of disagreement are more emotionally salient, and tend to receive more attention. See this essay https://slatestarcodex.com/2014/12/17/the-toxoplasma-of-rage... or this video https://www.youtube.com/watch?v=rE3j_RHkqJc

The world could use a few less people quarreling about their conflicting ideas, and a few more people seeking the intersection of what everyone thinks is good, and working in it.