Can you blame people considering how many fake out deaths have been happened? Folk might take Oda killing characters seriously if he didn't go out of his way to arse pull characters that have completely served their purpose, back from the dead.
You heard of the boy who cried wolf? Oda is the author who cried death. By the time he might actually kill someone for real, everybody will be expecting that character to be fine in like 10 chapters or so.
Besides, you said major death. Killer? Major? Lel. Killer is a tertiary side character who is not even in the Top 70 most popular characters.
https://worstgen.alwaysdata.net/for...worldwide-popularity-poll.11329/#post-1111034
Feckin Bepo is currently more popular than Killer. His death would have all the impact of a soggy tissue, barely anyone will care.
Luffy literally could not give two shits about Killer. Have they even had an interaction? Lel. Also, RIP the idea that Kidd's crew can rival Luffy's when his only useful subordinate dies on him.
Wait, how did Garp come into Wano?
Just accept that the Rooftop Five are going to win.
But do you know what I really don't get...
How in the feck could Killer possibly serve as a hype tool for Linlin when Linlin has already rag dolled Luffy in just the previous arc and matched Kaido in this one? She does not need the weakest Supernova on the rooftop as a "hype tool" this late in the arc.
Killer could no more hype up Linlin than Yamcha could hype up Beerus. This is an exceedingly low bar for Linlin.