I wouldn't flag someone over an opposing view, flagging is an extreme act and I would only use it as a last resort.

You never know what is going on in someone's life and what experiences they have had that placed them in a position to post something. Most people are good with good intentions and others are jaded with experiences to back up their world view. It seems unnecessary to penalize these people for playing the cards that they were dealt.

It is easy to say, "If I can overcome my experiences why can't they?" But maybe they are not as strong as you.