They met and failed to kill the entire Strawhat pirates bro, who cares? It's not narratively relevant. Oda just makes his villains comically incompetent. It's not narratively significant.
They're not comically incompetent, they're villains in a story where logic tilts toward the protagonist. For example, it was impossible for the dormant robot to not wake up and provide a Macguffin to expel them, no matter how unlikely it should be. "Knot of Haki" isn't a plot device that existed in the story before that exact need for it.
They have underlings, who don't even know who Zoro is.
You keep saying this as if it diminishes story. Ironically, this brings you closer to arguing that they're incompetent. Most agencies would acknowledge a billion beri hitter going into battle. The Beast Pirates, Red Hairs, Vegapunk, etc all knew. Ray and Shakki knew the members when they had a much smaller presence.
The elites in the One Piece world are extremely disdainful and condescending. They were correct in the belief that Zoro, back in Egghead, was not a factor in stopping them. But he was the guy they couldn't even hit. Luffy, Franky, and Sanji all got a taste from Saturn