If we are determined to have an obscenely huge military waging wars around the world then yes: killing the F35, use what already works well while the tech matur

If we are determined to have an obscenely huge military waging wars around the world then yes: killing the F35, use what already works well while the tech matures is the smart move. But if you want to wave a wand and grant me the power I’d cut the military budget 10% per year until it is down to $350b in present day dollars. That’s still 50% larger than the EU and many multiples larger than all our “enemies”.