Personally, I think it’s more a matter of rationale for the exercise rather than the specific exercise itself.
Meaning, I would prefer the intention of “improving the hip flexion pattern” over “psoas activation”.
So really, it’s a matter of programming in the appropriate drill and doing it correctly.
That said, if a “sticky quad” – one who’s layers don’t slide properly – is what’s preventing a good hip flexion pattern, then that needs to be addressed. Also, if the individual lacks ideal coordination of the abdominals leading to poor intraabdominal pressure, then I don’t believe the hip can function properly as well. Other factors may still be at play including same or opposite side ground contact, but again, I think it’s more of an issue with rationale and intention for the specific exercise than the exercise itself.
I know this doesn’t directly answer your question but it’s where my head is at currently.