Once the early Cosmos issues like tracking and controller compatibility issues are fixed (hopefully soon) I think that there is going to be a lot of early Cosmos haters eating a lot of crow. I'm already seeing a lot of improvement in xp11 and Aerofly RC8 (and racing sims) with my Cosmos compared to my good old Oculus Rift cv1 w/2x sensors, even with a lot of SS.
I don't have Aerofly FS2 so I cannot say for sure but I suspect it will work very well once the controller compatibility issues are resolved. I was lucky and found a xp11 developer who helped me get the right joystick settings for my Cosmos controllers and they work fine.
The Cosmos has lots of potential upgrades like wireless and eye tracking. Both of which should be available soon.
The best thing for VR right now is that there is beginning to be lots of good headset options, like the Cosmos, Rift S, V2 Reverb and Index. I suggest you pick your poison and enjoy it without knocking down other headsets and VR systems. All that does is poison the VR Well imho.