Dlaczego she, a nie na przykład
he, he/she lub
they?[/i]
The artificially singular "their" trick is hard to swallow to many. The written "S/he" is disturbing. "He or she" drives normal people crazy. So what's left? Make a customer a she in one sentence or two; switch to a he in the following paragraph, if you are really into it, and so on.
Once a purely grammatical term, today gender has become a weapon in the hands of deviants, weirdos, and their sponsors and supporters. Academia leads the way.