Couldn't we agree that its just extremely confusing to explain being more stable as being more straight.
New person askes has a teebird and maxes out at 200 ft...its way to much disc and just meathooks left. They ask for something more straight...guy at the store says this river is going to be much more stable...its what you are looking for
two months later that guy is ripping 350 and that river is turning over on him pretty hard...he goes in looking for something that is going to be straighter for him...guy at the store says this teebird is going to be much more stable...its what you are looking for....
in this straight world of "stable" meaning straight.....a teebird is mroe stable than a river which is more stable than a teebird which is more stable than a river which is mroe stable than a teebird....
see how thats confusing?
In normal people world...where more stable means more resistant to turning...and less stable means less resistant to turning....then a teebird is always more stable than a river...and thats the end of it...
I cant imagine we need to do more to confuse new players about how stability in discs work, why not just make things as simple and straight forward as possible...?