The article totally associates low birth rate to anime.
But, the genuine reason is, as is partly written on the article, workers' low income. decreasing men's income and increasing women's income is making men concerned of approaching female.
Japan's culture traditionally defines men as cash cow in family system, while female is supposed to work as household chores.
This stereotype still affects motivation for marriage. If a man-expected-to-be-husband is paid less than its partner, partner's parents will oppose the marriage.
So, social pressure and low income will continue to discourage men to marry.