I think if you want to compare the plots of New Vegas and FO4, NV did have quite a lot of issues with pacing and fleshing out its themes. The story didn't really even tie together until all of the DLC came out, which basically meant that if you played from Day 1 and bought all the DLC at full price you were paying over a hundred bucks just to tie up all the loose ends in the story. That said, the stories aren't at all comparable. NV had a lot to say about human nature, history, systems of power, and the way that brutality begets brutality. It was also able to tell it all in an original way. FO4 on the other hand cribs all of its good ideas from other, better sci fi, and doesn't present any of it in an original or thought provoking way. In fact, in a lot of places it's really stupid and poorly thought out. NV also made up for its shortcomings in the plot by having multiple endings based on several variables that gave gravity to your choices as a player. FO4 on the other hand has the same ending regardless of what you did, just so the game can be left open to do more settlement shit or grind enough popamole quests and respawning enemies to max out your perk chart.