My opinion: Time is too valuable to argue an opinion. If someone wants to remain adamant about a position they have taken, right or wrong, that's fine with me. I don't have time to argue.
For example, during the financial meltdown of 2008 Bank of America's stock went from $60.00 to $3.50. People (I know) would argue it's the end of the world and BofA was corrupt, and they deserved a $3.50 share price, and the were going out of business, and they were this, and they were that, etc...
Didn't have time or the desire to argue the points..I just formed my own opinion and kept it to myself. I then proceeded to purchase lots of BofA shares at $4.00. In eight months the price went to $18.00 and I sold.
Lesson: It does no good to disagree if YOU'RE RIGHT.....and they're wrong.