The planes are adaptable, multirole fighters that can, in fact, fly in all sorts of conditions. The problem is the ratio of maintenance hours to flight hours is really high. I was once quoted that it was an amortized $12k just to turn it on bring the engine to idle, and turn it off again.

Given that reality, in peace time, many operators will pick and choose when and where they fly. In wartime, of course, the way economy will either expand to handle the maintenance, or (more likely, imo) designs will pivot to something more manufacturable and maintainable.