The presenter has apologised, saying "I will never make the mistake again".
But campaigners have questioned the prosecutor's decision, given the gravity of the charges.
Taipei-based Modern Women's Foundation said in a Facebook post that the penalties are "truly insignificant for a figure with such social reputation and financial resources". A group of Taiwanese celebrities also issued an open letter, asking lawmakers to increase penalties for child abuse and sexual exploitation crimes.
"The society always treats these incidents as a news event. There is criticism but the dark clouds disperse after a while and everyone forgets about it," it reads. "We hope we can turn anxiety into strength to urge the Legislative Yuan to amend the law and establish a stronger safety net for Taiwan's children."