Was thinking along the same lines.
Need to get past our natural inclination towards tribalism (again, something that NOSTR does not solve & is very much present here) & surrounding ourselves with people that echo our cherished beliefs.
People are happy with freedom of speech when they think it means they can say what they want (and often expect no consequences), but what it actually means is hearing things that you may not want to hear, that your brain/ego will find difficult to process and will try to dismiss without actually considering in depth.
So groups of like-minded people form, shielded from contrary views, and are not constantly forced to re-evaluate their beliefs & opinions.
Would be good to see NOSTR become an environment where all are welcome to express any thought or opinion, no matter how controversial, providing its put respectfully, and conversations take place that help us develop a deep understanding of both sides of any belief we choose to hold.
This will take a very high amount of self-discipline though, and as numbers on the platform increase, the likelihood of all to be able to do this will decrease and you have the same problem.