As a comic strip character, yes; his artistic portrayal is lower middle-class, but shouldn’t we concede that Sluggo is a brilliant comic strip character?
This strip has me assuming that Ernie Bushmiller didn’t give Nancy earmuffs because her natural head hair serves as earmuffs. Ernie gave Sluggo earmuffs due to him lacking much in the way of head hair.
I like the part about the six million trees and candles.