Ya know if japan would do something about the ever growing ridiculous abundant amount of worthless super beta cowardly shut in loser male population in japan the birthrate thing would fix it self but those shit stains literally encourage each other to abandon all thoughts of sex and relationships and in turn join the hoards of sad sack basement dwelling perma-virgin life fails who spend their days humping their waifu print body pillows while looking at their obviously underage loli toy collection.
Harsh but true. What i find funny is that despite knowing that this is a problem and the term herbivore man came from Japan, they still actively promote it via their media (anime, manga, novels and etc.). And media has a strong influence if it's being consumed in massive amounts and it is due telephones and internet.
Do they expect women to take action? To my knowledge women hate men like that, there were even interviews in Japan about that and women clearly stated they expect men to take the first stem and that they seek masculine men. Shit can change, but women are slowest to adapt, they are natural conservatives in that sense.
Overworked, cuck structured, herbivore men.
Overworked is self explanatory. 996 (more like a chinese term but japanese also have something of the same) from 09:00 to 21:00 6 days a week. Family? What's that...Nahh it's better to hang yourself on the branch in the park.
Cucking is ingrained due to their weakness to authority (it's not unheard of bosses to bed their wifes and they would rather shut up and do nothing than to divorce and claim compensation from both <-- In Japan you still can claim compensation for infidelity + custody of the children will be yours if it happens). Or seniors taking their girls and etc. Basically it's better to look on the ground and walk straight than be a nail that needs to be hammered.
When you have a cucking like structure in your society you are less prone to have relationships. It does not mean that all men are cucks it means that it's more common and due fear of authority if that happens they ignore or mask infidelity. It's better to shut up or i might get fired, lose a promotion, people will start rumors, shame on family, shame on me and etc.
And herbivore are basically men that want women but are too afraid, shy or weak to approach them and take action. In essence these men expect women to take the lead and be masculine. And these men are on the rise in Japan as i've heard.
With all of these things in place they are programmed to go extinct. (+ Long recession doesn't help, they even had(have) deflation for a long time).