A constitutional monarchy is not something which has a "point" in some sort of intelligent design sense. You wouldn't design one that way.
A constitutional monarchy is what you get starting from an absolute monarchy and gradually draining the power out of it and transferring it to democratic institutions. It then satisfies the demand of the public who want the roleplay of an absolute ruler, and are scared of a fully egalitarian system, but without letting them actually do any absolutism.
King Charles does not have operational control of the military. He only has a large amount of personal loyalty, which is not quite the same thing. He holds a number of operational ranks from his service, from which he is retired, and a number of honorary senior titles.
The UK is just as vulnerable to troops-on-the-streets fascism as anywhere else. (Bloody Sunday etc)
It's not only about roleplay - it's also an actual power struggle that was never faught to completion, but instead slowed down, paused, or drained as you said. But because the monarchies were never pushed out, they didn't have much reason to play dirty and use their influence and money to regain hard power, in self defence.
The downside is of course, the monetary and social costs of having such an organ. But perhaps it's useful in the same sense the appendix is. When an illness catches the intestines, the appendix can best case be a reservoir of good and recolonize the intestines. Something like that happened in Spain.
A constitutional monarchy is what you get starting from an absolute monarchy and gradually draining the power out of it and transferring it to democratic institutions. It then satisfies the demand of the public who want the roleplay of an absolute ruler, and are scared of a fully egalitarian system, but without letting them actually do any absolutism.
King Charles does not have operational control of the military. He only has a large amount of personal loyalty, which is not quite the same thing. He holds a number of operational ranks from his service, from which he is retired, and a number of honorary senior titles.
The UK is just as vulnerable to troops-on-the-streets fascism as anywhere else. (Bloody Sunday etc)