As you said, it's just a rumor. I appreciate it's a fine line between rigorous selection and discrimination.
I have not flown the EC130, but as it is a variant of the AS350, I'd like to know how many pounds of force is required on the cyclic where there is hydraulic failure, the servos are dumped and you need to fly it for some distance to a run-on landing (even guys break into sweat). I have undergone such training on the AS350 and wonder whether it might be a factor influencing selection. I know of at least one charter company who had to let go of their best (lady) pilot precisely for this reason.