You can get some stability with touch controllers from resting your hands on something.
Follow the leader can be a good basic flying test. BnZ through the small hanger at max speed with various vertical maneuvers to reverse direction.
A one to one duel is a better fighter controller test as long as both pilots know how to merge.
sure you can get some stability that way. but it still falls short of a dedicated stick.
not only is the stick more stable in this regard, i can tell how far im pressing by the resistance of the spring.
add into it the resolution of the vr sticks is nowhere near the high end sticks.
you will notice this most when you think you have a full guns solution from straight 6 on the enemy and 200 out, a cant miss shot. and yet you cant kill anything. its just impossible to keep the nose as stable in the absolute correct position for long enough with a vr stick. you get just a little wobble and shotgun effect.
are they good enough to fly with, sure. more so if you actually enjoy them. but they do handicap you a bit.
i love my manual transmission cars, i won't buy a car with an automatic. but objectively a manual trans car is not as good as a modern automatic. still i wont buy an automatic and i hate driving them.
so i get the love for a substandard interface. but your going to have a hard time convincing people (or maybe just me) that its better.
just my opinion.