Possibly. From a joint perspective, it’s likely more inherently stable in supination. But again, you’ve altered the orientation and engagement of FDS/FDP, however, FCU is more in line with the valgus torque. Potentially just shifting responsibility.
I’ve used
@FlexProGrip a ton to look at the strength of these tendons, and one thing rings clearer than the rest - weakness overall is more “dangerous” than any given position.
Injury comes down to tissue load exceeding tissue loading capacity.
2 main things contribute to the latter half of the equation - maximal strength and fatigue.
If you’re strong enough, you’ll have a much greater likelihood of surviving suboptimal positions.
If you don’t manage workload and gas those muscle-tendon units out, none of it really matters…eventually something will give way, usually the passive structures (ligaments, labrum’s, bone, etc)