The primary, most important duty of the modern monarch is to act as the ultimate protection for the people against the overreach of power. Arguably, that is the only real duty of the monarch. During the prorogation debacle, the Queen utterly failed in that duty, that one reason for being for the monarchy, and when it came to the crunch - nothing. Therefore, if it can't do the one thing it's supposed to, why have all the rest? What is the justification for the palaces, deference, wealth, protocol etc.
I have been a Republican all my life (long story).
Whenever I have suggested abolishing the Monarch, I have always been lectured how they are somehow imbued with this mysterious power that prevents us - unlike say Germany under Hindenburg - becoming a totalitarian regime.
Needless to say no one actually knew this, because even then, you didn't need facts to win arguments if you felt it was right.
So I wasted my time checking, just to make sure I wasn't mad, and sure enough, the Monarch has fuck all power when it comes to politics. As we have seen (if we were paying attention, I suspect not all have been) if the Monarch even changes their hairstyle, it can be contentious. Let alone defy an elected government.
So if nothing else., we now know that the Monarch is - as I maintain - a very expensive way of getting an inky scribble on vellum. A task that I would do for free, but which I am guessing there are some people who would pay good money for a shot at.