Predisposition to do a thing is your inclination or desire to do a thing at all.
Basically the linked article finds that women are perfectly capable of doing the job, but the more choice they have, the less they want to do it.
What we *know* is that there is no aptitude problem preventing women from doing the job. We also know that many capable women choose not to, particularly in more equal societies.
Jumping from the above information to 'men are naturally more predisposed towards the sciences' is a massive and unsupportable reach, dependent on deliberately ignoring a host of factors and redefining words.
I agree; it isn't just about what you want.