this is literally your problem.
you only believe in things you already believe.
My beliefs are based on existing evidence and rational analysis.
when I am confronted with new information, I add that into my belief system and my belief system changes accordingly.
your belief system is "nuh uh, I never heard that before so how real can it be?"
your linked paper is a more conplicated description of exactly what I have been describing your problem as.
you are trying to pretend that words simply mean other words.
you are selfish.
you can agree or disagree, it doesn't change the selfishness of taking away others rights to advance your own sense of self-worth.
The democratic party advances social policy that benefits society at large and affords more rights to everyone.
your toddler terror tantrum threat is that you'll take away the rights of others if they won't make you feel good.
that is selfish by definition.
it doesn't matter if you agree or disagree with anybody else, taking away the rights of others unless they applaud your flawed thought experiments is selfish.
freedom to disagree is not the issue.
comfortably ensconced in the illogical feedback loop of your own belief system, you are acting selfishly.