This has never been true.
So you prefer two dudes just being mad about stuff and punching each other, even though one's not even really trying for the sake of dramatic tension, or he didn't plan well enough, or he's being mind controlled by Poison Ivy and has to be punched three times with a Kryptonite ring and electrocuted with all of Metropolis's energy to high heaven before he snaps out of it?
No. This was the shit:

Even Batman told some jokes. The dark, serious tone loses all its flavor the PICOsecond you add a flying dude in a red cape to the mix.
Imagine if you put Rocket Raccoon in The Winter Soldier.