You have probably messed up your tags somehow with mods, or the last patch messed Gith racial tags. I do not have the game installed currently so I cannot check. This dialogue was tailored for a Gith last I played one. You can see it working fine on videos on youtube as well.
As an example:
dang, the only mod im using atm is the basketequipmentSFW one
That mod shouldn't break the dialogue, I use it too. Maybe it got messed up with the new patch. My Gith playthrough was with patch 7.
"We are all stories in the end. Just make it a good one."
