In politics, all sides are wrong about something big. And it isn't clear whose mistakes are bigger. More importantly, all parties promote narratives where we argue about inconsequential items to distract the public from bigger issues.

For example in the USA, Republicans argue against universal healthcare even though their own internal analyses show that, done right, we would save money and have better healthcare outcomes. Democrats argue for a level of micromanagement in regulation that creates bad outcomes for everyone. Republicans have politicized basic science and generally believe it to be propaganda. Democrats put political correctness above sanity. And so on and so forth.

But neither party wishes to discuss the fact that we have become a surveillance state, with an insane legal system, and a prison system that is one of the horrors of the world. They do not wish it discussed because party leaders have reasons to continue these policies, but according to polls a solid majority of Americans, across political parties, would prefer these policies discontinued. See, for example, https://www.pewresearch.org/fact-tank/2019/11/15/key-takeawa... and https://www.prisonlegalnews.org/news/2018/nov/6/polls-show-p... for evidence of that.

Therefore the fact that politics is about something that matters is an argument that team A vs team B rhetoric is itself actively destructive. The more important you believe the issues to be, the more that you should aim to depolarize the discussion.