Throwing 2000 naval bombers would mean real live WWII ships are dead right? So it's actually expected outcome.
In a single battle? Yes.
Cept you never would as some would be spread out searching for a major battle or simply patrolling as others were refueling and still others were broken down or otherwise undergoing maintenance.
This is the same problem people have looking at nuclear warhead stockpiles and assuming all would be used. They wouldn't be as things usually go in 1/3: 1/3 would be undergoing maintenance replacing their tritium, 1/3 would fail for one reason or another, be they the failure of the warhead itself to initiate or the missile they're on failing during transit and leaving 1/3 expected to be ready and able to hit their target. Suddenly those 9000 Cold War level warheads are down to 3000 and you then have to spread them out between several hundred targets anticipating that you can't assign one for every target given possible failure to destroy the target, especially in the face of ABM defences. The result is those numbers being very spread out.
Back to naval aircraft, none of this is even touching on the other things such naval bombers would be doing, like those sitting waiting to attack in concentration, how others many would be assigned to anti-submarine patrolling and covering convoys as well as the large are you are assigning those aircraft to. It's one thing to assign them to the North Sea, but what if you're enemies ships aren't there requiring the wisest thing to do is to distribute those 2000 aircraft all over the North Atlantic, which given what was said above, results in only a few aircraft in one area at a time. Suddenly 2000 is barely covering it and you'd ideally require two to three times as many to really do the job.
The game Rule the Waves has an interesting mechanic in that regard to simulate the tying down of ships for simple patrol. In war you are required to assign a certain number of escorts to patrol or you suffer both prestige damage and in damage to ships from subs and mines. Going in not knowing how to play the game, you may think you have enough destroyers and other auxiliaries, only to suddenly realize that you don't and need to cut into your battle fleet support screen in order to meet those.
None of this then touches upon
if investing in that manay for naval warfare is worth is as you neglect the requirements of other areas of the war that are starved of aircraft.
This is part of the reason why Germany never developed strategic bombers. Why build 200 four engined heavy bombers when you could build 800 single engined fighters and bombers or 400 twin engined transports when Germany was always starved of air transportation?
Yea its a syndrome with modern game devs:
"Guys you know that stuff you liked from a previous version of the game? Well you were wrong to like it, we know better than you, its actually shit so we are removing it."
Then a few years later they bring it back due to "popular" demand... And then there is always the conspiracy theory that they now have a nice and juicy DLC feature they know people will throw money at them for.
It's funny because that kind of crap constantly happenes in military tech too.
Submarines and torpedo tubes are a good example of that. There's a good oscillation every 20 years between having few tubes and many reloads seeking longevity and minimizing the need to return to port to rearm and having as many single use tubes on a sub as can be fit with the eye that a submarine may not have the ability to live long enough to use all their reloads and being able to fire the most torps at one moment, or at least before they inevitably get sunk, is more important.
Yea, current sub gameplay is pretty much entirely about simply building them in gigantic numbers to offset constant losses.
Which is historical.
In general, either the naval war is won easily (through some lopsided abuse of naval bombers/battleships/carriers/etc) or most players other than the US/UK/Japan will ignore it. There's no reason for most nations to invest significant resources in naval warfare in order to fight at 1:1 parity and stalemate the AI.
Again historical.