CalBear can put it best, or Astrodragon, but put simply the massed use of carriers is started by the RN in the 1930's, albeit with two carriers. I know that that's not really 'massed', but that starts the practice. The USN also started using multiple carriers, as did the IJN.
Now for the most important area. Training/experience. The IJN is the fearsome weapon that it is in 1941 because of two factors. The first is the war in China, where the pilots, commanders and above all carrier crew get a huge amount of hands on experience. Not war games, not training on theoretical concepts, I am talking actual practical experience. There is a reason why the Arizona blows sky-high after a hit by a bomber, and that is that the Japanese air crew have both been there and done that. The other reason is that IJN carrier pilots are the cream of the cream, having been rigorously selected and then getting at least 300 hours training. According to my edition of Eagle Against The Sun some pilots have 800+ hours experience.
Carrier crew experience is another factor. The RN created the concept of the carrier in the First World War and their allies the US and Japan copied them and then continued their development. Carriers were built according to available hulls, conversions, building slips and the limits laid down by the Washington Naval Treaty. For instance British carriers were designed for usage in European waters, where they would be able to benefit from friendly fighter cover as they would most likely be attacked by enemy planes. That is why British carriers carried fewer planes and had more armour. HMS Indomitable received two direct hits from German bombs in 1942, along with three near misses. She was steaming at 28.5 knots two hours later. RN damage control, plus armour, helped. RN damage control was in fact excellent. So was USN damage control. IJN damage control - not so much, because fewer specialised damage control crew were on each ship. If the Germans learn about damage control from the IJN they would not do well.
The first use of 6 aircraft carriers is by Kido Butai in 1941. At Pearl Harbour. But each individual carrier has seen their crews intensely trained, with experienced crewmembers leading the inexperienced, and with many if not most of their pilots having combat experience.
Let me put it another way. By 1939 the RN, USN and IJN have been operating carriers for two entire decades. They are therefore ahead of every other navy on the planet. If the Kriegsmarine develops multiple carriers (which would in itself cause every light to burn through the night in the Admiralty the moment the news came though because the RN would realise in an instant that the Germans were going to attack them with those carriers) then they will be behind the curve in almost all respect.
So yes, it's improbable.