I was watching "Clint's Reptiles" and getting annoyed by his pessimism about the possibility of giant ants. But, he made and off-hand comment that struck me: Winged insects generally do not molt once they have their wings.
In insect development there are two main models: metamorphose or just molting and generally getting bigger without a dramatic transformation.
Molting once you have wings is a problem.
Don't know why I never put that together myself.
@futurebird 💭ants teaming up with pro-ant humans