Those conversations are meant to serve as a recap of the previous quests, in case you left the questline half finished and revisited it months later.
Or they are meant to introduce lore concepts that might be difficult to new players.
If you know every plot point in the story, or you have read every wiki page... those dialogue options are not for you. You can just skip them.
Whiskey_JG wrote: »yeah Blackwood totally killed my enjoyment of story telling in this game.
Thankfully that was restored by AROX THE MUTILATOR!
I enjoyed that npc so much I replayed the deadlands main quest on all my characters. Pity he was only turned into a housing companion and nothing more....