And with that, I think I'll have my last word and lock this thread down. It's been getting me worked up, and I'm sorry it's been contentious and so many friends here have been supportive, and I'm going to wrap up the thread with a final thought.
If this were a fantasy game, there'd be an expectation that every adventuring party should have a magic user on the team. Your adventuring party would not survive without them. There are science fiction settings where psionics are welcomed, and the main protagonist is a telepath, say hello Doctor Who. Star Trek would not have been the same without Spock and his mind melds. And the Third Imperium setting contains an important allegory about all manner of real world persecution and oppression of political, religious, and other minorities.
There is an opportunity in Traveller to understand what it feels like to belong to a people who are hunted and even marked for extermination. You have people living in enclaves in the 3I being bombed and chased down, put in camps, stuck in The Gash orbiting Pixie for their political views.
What is wrong is having players at the gaming table accepting this as normal, and having characters who support the institutionalised oppression, and players even trying to tell other players that they can't create characters with an agenda of wanting to bring the hatred to an end, within the story.
I created this thread to talk about the psion communities within the 3I. There's been a lot of the old "yeah, but you're gonna be hunted down, so you can either leave the 3I or run another game," and even "what would we do if we weren't allowed to be prejudiced any more?" which put me off Traveller, for one almighty hour.
Few people have come back, agreeing with the idea that something should be done with the core rules, to point out that it's only the 3I that is blind to this hate (and the Travellers can do something about it), but that your non-3I setting doesn't have to have this at its core like the 3I.
So this thread ends, now. I'm going to write something. Think I'll do something for Mythras.