That isn’t the point. Simulation Training is excellent, but without “hands on” with the real thing, you cannot expect to be considered fluent without actually flying the real thing and then prior to flying on an actual combat mission.
That is true whether you get simulator training or not. But the difference is the aviator with only simulator training can wind up at the same starting point for tactical training as the hands on guy. The difference is he can generally get to that starting point much quicker and be just as proficient without ever pushing a real start button and putting wear and tear on the equipment.
Nobody is making the claim other than you. As stated by Ladtx: the simulator can save a good deal of money and even equipment in training up flight crews
In other words, the simulator is nothing more than a training aid leading up to the actual cockpit training which you are obviously ignoring.
To support your argument, why don't you provide evidence showing that our military fighter pilots are entering the air in combat missions without extensive fighter training or just plain flight training in general which you are alluding to..........?