This is god's own truth. CBR will be like, "THIS NEXT STORY ARC OF BATMAN DETECTIVE COMICS CHANGES EVERYTHING FOR BATMAN" and there are already 40 fanfics and 200 Discord conversations and old Tumblr threads spanning years exploring whatever massive character development twist it is in excruciating depth from different angles.
The secret is that if you understand that Batman and Joker are in love and you treat that as one of the pillars on which the story rests, everything else clicks. Many creators of Official Batman Media understand this which is why they keep having them be in love for the sheer drama of it all and then saying things like "uh did we say they were in love. well we didn't mean love love. they are doomed and tragic romantic soulmates who can't live without each other though."
There have been multiple video games about this now.