I hate to break it to you guys but this is the canon Mr. Krabs humanization.
Don't know if you take headcanons but imagine Gaston being alive after the fall and when Lefou finds out he brings him back to health and they're living at the castle (bc Belle offered Lefou a place) but Gaston isn't the same anymore. He's so quite and doesn't boast about himself anymore. He's really insecure (many ppl don't know this tho) and he doesn't miss the way people tense up around him. But he's dating Lefou and has a close relationship with Chip who defends him bc he looks up to him.