>>12413082They do, occasionally. But it's a sideshow thing. It's tolerated as a fun special attraction once in a while as long as it's not too important
Stardom does a gimmick match every once in a while, and nowadays they one ladder match and one cage match show a year (they weren't doing this when Iyo was there, I don't think), Dragon Gate does a cage show every year, NJPW has their KOPW belt where the belt gimmick is that every match has a weird ass stip, and every once in a blue moon NJPW will do a no DQ match. Tana jumped off a ladder at WK16
Then there's DDT, which is just retarded japanese shit: the fed. But they're not taken seriously