Eh, I have mixed feelings about it.
In some matches planes are literally the only tank counter. Sometimes you also get competent enemy pilots that shoot you down and start messing up your tanks/forces. Why exactly shouldn’t you been in able to spawn a different plane in that case?
For example I usually start with the IAR, because it’s faster and more fun than the Stuka… But its not a plane that can just win any dogfight. Other option is 109 F-2, which is way more capable of a fighter, but it looses capability to top down almost any of the tanks and the 250kg doomsday device. And then you have the absolute “break glass in emergency only” Reeeeeeeeeeeee 2000 for when someone is cockblocking air with a Spitfire.
And then there is cannon Stuka, in case someone on your team already took out a fighter and is flying in circles somewhere and you absolutely need to blow up that 105 currently killing your entire team. Or become the fighter yourself lol.
So yeah, I will “plane cycle” a few times if I there is stuff that needs to be bombed or shot down and I don’t really think it’s that much of a problem to be honest. Lots of complaints seem of “tried nothing and I’m all out of ideas” variety. The amount of matches where AA guns are ever built is miniscule. And most of the times I’ve seen them it’s knee jerk "you shot me down/bombed my HE slinger, i will build an AA gun and shoot you in the back and never use it again”
Should you be able to repeatedly respawn and just plow into the ground? Hell no. It would also be nice if other people had some form of priority over a guy who is on his 5th plane in a row too lol