Incorrect.
True, but FS-FlightControl has this feature. If you want it as a default in MSFS, you can wish-list it here:
Use FS-FlightControl (link posted above) or Randfailuresfs2020:
https://flightsim.to/file/2272/randfailuresfs2020
True, and this feature has been requested.
True. You can buy Carenado’s PA44 and M20R for that.
Absolutely incorrect. See link above for FS-FlightControl and also Prosim. Both of them are fully compatible with MSFS 2020 and used in professional flight training :
https://fselite.net/news/prosim-ar-releases-msfs-compatible-prosima320-1-42/
“ProSim Aviation Research develops stand alone flight simulation software that is designed to model complex aircraft systems, and is often used in professional quality flight simulation setups, and simulator flight training. While ProSim Aviation supports versions of their software for multiple aircraft, version 1.42 of ProSimA320 is the first to be compatible with Microsoft Flight Simulator.”
Last but not the least, MSFS is only four months old, and a brand new flight simulation product. It’s not an upgraded version of Prepar3d, fsx or XP. It will take some time for more study-level software to be made for it. If you study the history of FSX, Prepar3d, XP, DCS etc and how long it took for study level software to be made for them, you will quickly find out that this is a fully natural phenomenon.