I really wish death mattered in comics.
If it did, Batman and The Joker’s recent deaths in the comics would have been monumental. For 75 FRAKKING YEARS these two have fought, and for 75 years The Joker has survived (Except perhaps in The Killing Joke, depending on your interpretation). Sadly, Batman has died and returned several times.
But this time he and The Joker killed each other and, if it mattered, it would have been a fitting end to a 75 year story, and it would have changed the face of comics.
But we already know Bruce Wayne’s coming back, so it doesn’t matter.