the 'studies' linked seems to be about 'adult' sxx toys, not child like sxx toys.
Why do you suspect child like sex dolls don't influence interest in sexual abuse fantasies?
there is No positive outcome of those wanting/ owning/ using child like sxx toys.
Except there is a positive outcome, and its the one that depends on whether child like sex dolls reduce interest in sexual abuse, or not.
It is not obvious your perspective is right, and I think you've got it backwards.