Killer would have given this treatment to most Veteran Level characters.
The issue is less Powerlevel and More Potrayal. Hawkins arguably had the worst Potrayal of all Supernovas except for Bonney.
No backstory, no Epic moment, his Crew isn't even in Wano for some reason.
The Roof 5 are self explanatory
X Drake had a backstory, SWORD Connection, Friendship with Coby, epic moment where he one shot a number and likely gonna get to finish off Apoo and possibly gonna interact with the CP0.
Bege had a backstory, a Cute relationship with his wife and In Laws, a decent crew by Supernova standards, got to humiliate Oven and Tank Big Mom's Punches, in General was the Minor MVP of WCI .
Urouge got to Defeat Snack, even if he never appears again that's more than Hawkins ever got.
Bonney has a connection to Kuma and the World Government.
Apoo was the mastermind of Kaido capturing Kidd, Is in charge of the Numbers, Beast Pirates DJ and had several cool moments in Wano. Even if he's gonna lose at least he put up a fight with so many Heavy hitters like Zoro Kidd and Drake.
Hawkin's only decent moments were him using his brains against Law and Killer. And Both times it got him fucked up in the end