I don’t think the institution of monarchy and its future is going to be defined by the reaction to the funeral of a woman who has been a constant for most peoples lives.
The death of of the Queen will usher in change. A lot of commonwealth countries will take this opportunity to revisit whether they want the King to be their head of state, and I’m not convinced Charles has the ability or the nous to keep the institution relevant. By that, I mean he is vain, entitled and tin eared.
Now, if it was Anne inheriting the throne, I would be a lot more confident.