That's what this article says in the Kiwi press.
“It feels good to finally get it (the steeplechase record) done,” Beamish said at an interview immediately after the race, possibly his last before running the 5000 metres at the 2023 World Athletics Championships, being held in Budapest, Hungary, on August 19-27.
Why in the hell would he run the 5000 over the steeple? 1) If he's going to do 1 event, it should be teh steeple. He's cannon fodder in the 5000. 2) The double is easily doable. Steeple is on 19th and 22nd. 5000 on 24th and 27th.