We're billions of people on the planet. Most jobs don't even pay enough to feed a couple of people. I believe that there is an oversaturation of people on the planet and this has caused a devaluation of their labor.

Europe would have remained feudal for quite a longer time if the population collapse caused by the black plague hadn't happened and caused the demographic changes that it did. Without the plague, peasant labor would be plentiful and the status quo would not have changed. However, with the population reduction, the class in power had to concede to enough changes that brought about the Reinassance and the Industrial era quickly after.

In the Bronze age, without the climate changes that brought about cold and dry conditions and triggered the fall of the city states ruled by an oppressive theocratic class, humans would have still been tied to those stifling conditions for longer and wouldn't have brought about the classical era.

With the onset of AI and advanced robotics, population collapse will allow people to see their labor valued adequately, instead of just more and more people in the workforce working more hours and getting paid less and less, doing meaningless busy work jobs to pay for things that they don't need or enjoy, like crypto, gambling or online cam girls. A controlled collapse by fertility is not only non threatening, it is also desirable and the most acceptable way to cull numbers a bit. We need this, otherwise, the base of the pyramid will only get wider while the top will only get slimmer. Tragedy breeds suffering, but also change and we NEED change. The problem is the transition, but after the transition, we'll be in a better place as a society and we will bring about change.