You can try to turn this around however you want. Planes are in GRB since day 1.
Clearly they are intended to be used in this mode. Which the description also states.
What kind of “argument” is “you can’t first spawn them” ?
There is still something called balance.
You can’t just thought it out poorly and make one vehicle type have literally no objective interaction. This is pretty much like forgetting to include a sink in the bathroom or make a house without doors. You simply don’t do such silly mistakes and keep it like that for a decade.
fyi planes were added a few months after tanks after the bi weekend tests turned more frequent - i know because i was there from the beginning literal day 1. Back then they weren’t a big deal, now they’re more annoying.
The fact that they already have less ways to impact the game shows how they are not neccesarily needed in the mode. Any tank can kill other tanks. But no plane can capture od decap objectives.