When you’re flying VFR, you need to be able to feel where the plane is going and how your inputs are received. Your eyes should be outside 95% of the time, also because you also need to be looking out for traffic.
Using a simulator doesn’t let you build that feel, so you end up spending a lot of time looking at the instruments. When you step into a real plane that can make things difficult, as you’re supposed to be able to maintain altitude by just looking outside, etc.
What if you train with instruments obscured? Wouldn't a flight sim user then learn to feel the plane just as fast as or faster than someone green to flying?
Essentially, if the problem is that the instruments are used as a crutch, isn't it "just" a matter of taking the cructch away for a while?
You still need critical instruments such as airspeed, RPM, manifold pressure, etc. Especially on crystal clear VFR days, it's possible-bordering-on-easy to fly the plane with your head stuck in the instrument panel and being mostly aware of the horizon in your peripheral if, for example, the instructor obscures the attitude indicator.
You can't even "feel" the plane in FAA-certified simulators, so I'm not sure how you'd feel it on a laptop with a joystick and plastic rudders. And of course the big issue - if you're VFR you need to be looking for traffic because nobody is handling separation for you except you.
Because whilst during training you should be spending 95% of your time looking out the window, the remaining 5% are spent bashing it into your head how to do an effective instrument scan and also there are parts of training where instruments get combined with the outside environment (such as learning to get a radio fix if you're lost and correlating that with what you see out the window).
Obscuring instruments is sometimes done, but that's much, much, later down the training line.
Using a simulator doesn’t let you build that feel, so you end up spending a lot of time looking at the instruments. When you step into a real plane that can make things difficult, as you’re supposed to be able to maintain altitude by just looking outside, etc.