No way. The idea that your wings don't have to move wasn't new, it's ancient. People were building paper planes thousands of years ago. If all it took to fly is to not move your wings, people would have been flying around thousands of years ago.
Making a flying machine takes far more than that. You need to understand the lift equation, how airfoils work, how and why you can and can't control wings and attitude, etc. The Wright brothers didn't strap wings to a bicycle, they spent years working on the physics and engineering of flight, including building wind tunnels.
From the outside, at a high level, without understanding the physics or engineering of these systems, it's easy to say "Oh, it's just X". Like looking at the solution to a chess problem and saying "Of course, I would have seen that". You wouldn't have. As evidenced by the fact that no one did. For millenia.
> Also comparing the lack of progress today to the lack of progress in medieval times is not the flex you think it is.
I never said there's a lack of progress today. Scientific progress is amazing today, far faster today than at any point in history.