Re: The complaint seems confused
Then if you misidentify a significant proportion of users and serve them the wrong content your advertising is likely to be less effective than when you serve neutral or random ads - a lot of folk might be a bit sensitive about having their gender misidentified
Nonsense.
If you serve random ads then half of the time people will see ads for the wrong sex (gender, whatever). If the thing works then this ratio will be [considerably] lower – by definition.