I don’t think most people who say “Naval is dead” actually mean that it has no players. It’s more about the fact that nowadays you’re basically facing AI bots in every battle.
Some players thought that the major update, which mostly focused on Naval and added iconic battleships to the game, would somehow make the mode popular, but it didn’t.
It looks especially bad when you compare Naval to Air or Ground modes. I think this graph is more interesting, as it shows the difference in popularity more clearly:
In July, Naval made up only about 2.66% of total Ground sessions and just 6.62% of total Air sessions. So there’s no doubt that Naval’s popularity is marginal compared to other game modes.
The popularity of a game mode directly translates into revenue - the more popular the mode, the more money it generates.
The problem is, developing the Naval mode doesn’t cost only 2.66% compared to developing the Ground mode. So there’s a valid question: how long will Naval continue to be developed?
We saw a similar situation with Helicopter PvE and nowadays it’s completely abandoned by the devs. They don’t even care about major bugs, like broken objectives, that make the mode frustrating to play.
I don’t think Naval has a bright future in War Thunder. If you really think about it, how many updates could still significantly boost its player base? Submarines, maybe aircraft carriers, or modern missile ships and that’s about it. But how much effort, time, and money would it take to implement those into the game? At this point, it’s more a question of whether it will ever happen at all.
From my perspective, the Leviathans update was a disaster. If the Naval player base had grown five to ten times after that update, it would have been a success, but it never happened. From the devs perspective, it doesn’t really matter whether Naval’s popularity compared to Ground is 1.5% or 2.6%. Those are still marginal numbers, effectively meaningless. I think that’s what people mean when they say “Naval is dead”.