Finding ways to keep an open mind and unbiased within a conversation or while reading a posts is difficult. Those critical commentary step are solid.
My own little method for steemit it this:
Was the post "value add." If it any way added value to the community through knowledge, catalyst for discussion, etc. I will upvote, even if I completely disagree with the point being made.
And then of course...if it entertains me then upvoted as well. I'm a simple creature..LOL
I see no reason to argue with a post I do not approve. I rarely comment on stuff like that. What's the point?
Still, I do upvote good content myself even if it does not mean much to me, personally. I like a good effort!