"It's a climate where 'opinions' matter more than knowledge..."

It's not just that. Sometimes the people don't understand the difference between their opinion and facts. Like I could point out some factual incorrectness and they see me as attacking their opinion. A lot of the time they coincidence, but sometimes I might be in favor of their opinion based on other facts and simply don't want misinformation to spread. Or we might share the same objective but that false information would lead to a flawed implementation that would block us from achieving a shared goal. Not to mention, I try not to attack an actual opinion, because everyone is entitled to one, even if it differs from mine.