No character death in Wano involved me emotionally as much as "Mr Go" departure.
Mr. Go went out teaching the reader a true life lesson.
In any profession you will find yourself in, there will be many lazyass co-worker who are there just for the paycheck, and whenever the chief will ask an hard task to accomplish, they will punctually disappear. It will be up to you to decide if to disappear aswell or work your ass off for you and for them, despite being troublesome or sometime even dangerous. The latter is the case of Mr Go, who proved he wasn't there for the paycheck, he was there for a mission, he was devoted to what he was doing and was ready to put his life on the line for it. And it wasn't for fame or for glory, he was the silent soldier protecting the people while operating in the dark. Honor him.