Comic Strips

I don't think it's some global conspiracy, rather a natural outcome of capitalism.

Under capitalism, the only way in which a person can earn a living is by performing a job. Thus people naturally associate having a job with prosperity, and push politicians to "create more jobs". The politicians then create incentives for private companies to hire more people, without actually aligning the labor output with the needs of society. This in turn makes it profitable for capitalists to "create jobs" which don't require much in terms of capital advanced (i.e. means of production), and thus don't produce much value, because the lower output value will be offset by various government incentives.

There's another reason for bullshit jobs under capitalism, namely that of financialization of everything; capitalism necessarily maximizes the rate of profit over everything else, which means that it will create work that produces no use value at all (or even "negative use value"), but increases the rate of profit, such as imperialist military and MIC, or many finance jobs out there, or advertising/adtech, or planned obsolescence engineering, etc.