Funny you would pin the blame on KPs.

With EO headcount set to decrease and decrease over the next several years, even a perfectly equal or equitable workload distribution (if that is even possible) will lead to a steady increase in workload for everybody, including the KPs themselves.

Those Gen Zs that you are referring to won't be able to cope with the realities that come with the shrinking workforce and aging population, which will hit all working adults in Singapore, not just teachers.