> If you were multiparty system there will be less identities in politics.

If only it were that easy. I come from a country that is notorious for having political parties dissolve/new ones forming all the time, and politics are still all about identities and people still treat issues with a very black-or-white perspective.

As many have made the point before, I think this kind of discourse/attitude is more due to the social media echo chambers environment we now evolve in, and that modern societies can't escape it.