This could be a major, and very interesting, discussion.
I personally think that if we denounce football tribalism and marginalize it/force it into redundancy, we will be stripping the game of one of its great, great assets, as well as denying a core element of humanity. I think I know what you’re getting at, and there needs to be balance i.e. being able to shake hands, understand we’re all human, have friends who support other teams, etc. Very very important. But equally, the energy of traveling to matches, especially away games, congregating with your fellow supporters and getting behind the team for an afternoon is absolutely tribal.