As for dedicated helicopter PvE, we don’t have any active or in-progress plans for its additional development right now either. We believe it already offers enough variety - in terms of goals, objectives, helicopters with different weapon loadouts.
This basically says: “We don’t play Helicopter PvE mode, but we believe it’s in a perfect state, so there’s no need to touch it.”
It’s really not that hard to play a few battles and see for yourself what the Helicopter PvE mode currently looks like.
A lot of bugs that are simply ignored in bug reports, including broken objectives (bases, sector attacks, sector defenses, landing objectives, planes). These are crucial parts of the mode. In many battles your only option is to J-out and switch to a new match, because some bugged objectives will never fix themselves (bugged bases, bugged landing objectives).
Still only two BR brackets, which may have worked three years ago, but now helicopters with 3.75 km missiles get matched with helicopters firing at 8 km. This could be solved very easily, by adding more brackets - but this suggestion (made two years ago!) continues to be ignored:
https://forum.warthunder.com/t/additional-br-separation-for-helicopter-pve-mode/32055
The newest helicopters with fire-and-forget missiles made the situation even worse. They completely dominate battles and greatly reduce the chances for other players to get any decent score:
Spoiler

Far too few objectives for 10 players in a single match. Of course, the suggestion to reduce the number of players per battle also gets ignored:
https://forum.warthunder.com/t/proposal-to-reduce-heli-pve-matchmaking-player-count-per-battle/32054
Rewards are very poor, especially the RP part. This game mode only feels even somewhat worth playing when you use huge RP boosters. Without boosters, there’s really no point in playing it.
Do you know why Helicopter PvE isn’t popular? Because it feels like it’s still in a very early alpha state.
The saddest part is that some of these fixes wouldn’t even require much coding. Reducing the number of players in a match is basically changing two values on the server, and the devs still refuse to do it. How blind do you have to be to pretend that this game mode is finished and working perfectly?