What is unrealistic about, maybe we shouldn't treat genocidal psychopaths as besties and we might have a future where organisations like the KGB or CIA are not needed. The CIA didn't even exist until the 20th century and was very nearly shut down by Kennedy.
These organisations exist because of the geopolitical nature of earth in the 20th and 21st century under imperialism and capitalism, the material conditions of the future may be very different.
This is what makes S31 crap to begin with, it shows that even in the future humans are just violent hypocritical imperialists. It's representation on Discovery also basically tells the audience that things like Iraq ,Vietnam, Yemen are justified. If Star Trek is about showing the best we can be, what does it say about the writers that their vision of the best we can be even with unlimited resources is to be reliant a psychopathic organisation that engages in violent regime change, mass surveillance and genocide.
Why people want a TV show in the Star Trek universe around this crap is beyond me. 99% of science fiction is dystopian dark shit, why can't we have at least one nice thing that says we can be better?
Hahaha
Another example of why I am already a fan of the S31 series!
The great triggering of the genes "vision" crowd