I'm a professional astrodynamicist and I owe my base level understanding of orbital mechanics to KSP. It's a fantastic resource for learning the basics of Keplerian motion.

Also, obligatory XKCD: https://xkcd.com/1356/

Arguably aerodynamics is confusing on a whole other level to mere orbital dynamics. :D

I washed my hands of aerodynamics after I got my first job in satellite navigation. Messy stuff, that Navier-Stokes business

No, it's simple. Just make sure the airplane falls nose-first if it ever stops (speed<stall).