OK, I think I've lost track of what I was arguing. F-35 is fine.
It's just that strategic reliance upon such a complex system intuitively seems bad without some Russian\Iranian style main scalable cheap body, which is also what Ukraine has, Turkey has and what USA is building. Basically everyone with a pretense at having self-sufficient military.
What would EU countries do if right now a mass of cheap drones, cruise missiles and stormtroopers started moving their way?