"Oda doesn't like killing characters" =/ "Oda does'nt kill characters"
Sure Oda has been notorious for years with his fake out deaths, but ONCE in a while, Oda did kill off people, 2 in fact, as in Ace and Whitebeard, in the same arc, whearas he had never killed literally any good guy before. So, who's to say, he won't break "no villian has died" rule right in this arc, in Wano.
I mean, shit, people like to use that argument as in why Kaido won't die, but they got 0 problems with Orochi dying.