> I think there are two main reasons, the first being the sheer intellectual difficulty of crafting an informed political view leads people to tribalism out of convenience.

What's the difference between tribalism and deferring to experts on complex subjects, e.g. climate change? I have a deep skepticism of people who think they can personally reason through any complex topic from first principles. It shows a lack of humility and self-awareness. Nobody has the time to build that kind of expertise in every domain, and there is wisdom in deferring to the hard won experience of others. But the type to think they can reason through everything seems like the type to call this "tribal politics."