I think several things, they are rambling and in no particular order because I can't think straight any more:>There are more men of breeding age than there are succubi in almost every country in the world, including in the West. This means the rose-tinted "promise" that many men seek of a wife, home and family will not be available to them, especially in the modern world of promiscuity, hypergamy and divorce. So another means of control is needed.
<succubi are definitely given multiple advantages in life. This can in part lead to succubi holding key positions of power which will make them less reliant on men.>I think feminism has definitely has an effect on men, the constant bombardment that everything wrong in the world is men's fault and succubi getting education, career, social and relationship advantages is demoralizing in a world where "equality" has been hammered into you. In education, politics, courts, media, etc, you are screamed at about "toxic" masculinity, you will be blamed and convicted, while succubi are praised and encouraged to their best potential.
<There is definitely a trend to feminise men and make them look like fools to make them more meek and less authoritative, in everything from how they are portrayed as oafs on TV to banning "brutal" sports like rugby and wearing skirts in schools.>The fact that half of all men are now brought up without a single male role model in their lives does encourage this. succubi get custody the majority of the time, most teachers in schools are succubi. It makes them not only easier to control by succubi, but also removes any guide to help them in more masculine matters, making boys growing up feeling more lost and confused. Another point to add to this is young boys are now often given drugs to "calm" them down, as if the natural active and energetic state of a boy is shamed and somehow bad.
<I think much of the harassment men get is just pure bullying from normalfags. Same way they bullied "losers" and people who are different in school, they find it acceptable to demean men who dare to not follow society's norm and do something like going their own way. "You MUST consume, you MUST pursue succubi, you MUST put succubi on a pedestal, you must NOT criticize succubi, or else you are an inc*l." Sad thing is other men, especially normalfag men, would encourage or ignore this bullying this for reasons such as "not my problem", simping, or crabs in a bucket mentality.>I think media and the internet is being used very effectively to placate single men and keep them zombies. Everything from anime to vidya to porn is useful in distracting men from their depressing lives and miserable enslavement to the system. Escapism is a powerful tool.
<Men are still the net contributors to the State in taxes, despite there being more female college graduates since the 1980s and college-educated succubi earning more than men, succubi still take more than what they contribute. succubi need men to just shut up and work to pay for their increasingly massive welfare state.
I don't think there is any central plot to do all this, this is just the way society has natural evolved to cope with an excess of men, and dampen the natural drive of men in an increasingly soft and matriarchal society. There is definitely a desire from all in power to make sure men just work, pay taxes, and do what they are told; but it seems too mismatched and chaotic to be any plan and more like they are making up this slippery slope as they go along.
I think more men are beginning to realize playing by society's rules is not worth it. But I think more men are just wanting to do their own thing and be left alone.