Well, Lando does refer to him as loser to Chewie. I’m okay with it being pristine, I mean Lando is a ladies man, and he wants to keep things new and fresh.
Think of it like this, Han is not worried about the appearance of the ship, that doesn’t pay the bills, speed is all he cares about, he modified the ship to get cargo from one side of the galaxy to the other in a hurry, not be in a best looking ship contest. He’s a pirate, not the Imperial Navy. He doesn’t follow rules, he makes his own.