Neither a royalist nor an anti-royalist here, but I have worked in a role where I've interacted with senior royals on a regular, repeated basis, and have to say that I find the idea that they are are overworked very, very funny.
As one example, a senior royal would come for a quite short visit (30 minutes? 45 at most), would unfailing have rejected reading the briefing document about the nature of their visit and who they were meeting, and would be swept away on the dot at the conclusion of their visit.
It would have taken underlings months to prepare for this visit where the senior royal would gaze thoughtfully while having their photo taken and make very shallow small talk reflecting their lack of engagement. That would be their only responsibility that day (as reported in the circular).
I take no view on whether various royals are good or bad people, and I frankly don't care, but my view is that they are absolutely very pampered, priviliged people, surrounded by nannies/cleaners/PAs and staff, who do very little of what normal people would regard as 'work.' They may resent this work when they compare themselves to their extraordinarily wealthy peers who have no public obligations, but overworked or hardworking or even 'working'? That's a no from me, hun.