This is very important feedback, thank you! I knew going in that not everybody would like it and honestly I've been shocked more people haven't voiced their discontent. What you're talking about is definitely a fear of mine, that as cool as the flight model stuff is on a technical level, what's most important is that it makes the game better.
It can happen sometimes, don't let it get to you. I'm glad to be at least somewhat helpful.
I do not know much about the art of coding, I will admit. I also cannot imagine how much effort it must take to make something like this. However, you've shown that you've got loads of dedication and talent, which are fundamental when making a good game, and what I've seen so far certainly seems to be on the right track.
Also, the plane selection shows that you've got absolutely patrician taste in aircraft :^)