It is refreshing that there are characters like Dragon that add some sense of realism to the manga, its just that OP readers are used to retards like Luffy and Garp at this point. No revolution in history was achieved without countless sacrifices.
The fact that Dragon is attempting to take down an 800 yrs old government in a single lifetime is mad by itself. Its been two decades and he’s already winning at it, the man is unrivaled when it comes to success as a military commander. And again, this is selfless sacrifice, he doesn’t have to do this but he knows he can make a difference. He definitely wouldn’t think twice about sacrificing himself for the greater cause because that’s literally what he has been doing his entire life.
Greater responsibility = tougher decisions