I agree, more or less. (I kind of hope this will be the last unelected monarch, so the thing about Charles, nope. The rest, though.) Thought I'd just say this since I know this is probably a minority view for posters on this thread.
Of course by now several posters, missing the point by miles, have reminded us that the men on horses or marching in line in silly hats actually fight sometimes ... with real guns and everything. And that they are so brave and so on.
OK. OK. We get that. But the horses are silly, likewise the hats.
It is interesting (to me: I know many people don't care) that the whole affair is so very Victorian - it looks like it was choreographed by Rudyard Kipling's maiden aunt.
Tradition? Fine, but why not have some medieval stuff? Perhaps we could do some mock hanging-drawing-and-quartering, very popular royal tradition so I've heard. Why stick with such basic imperialist signifiers from the nineteenth century, given our long illustrious royal history ?
People like it. In that sense, not unreasonable. Of course people like lots of unreasonable things. Empire, colonialism, war, theft, slavery, oppression; all things people have liked and sometimes still do; all memorialised here and now by men on horses in silly big hats.
But, well, chacun à son gout. I enjoyed our street party yesterday.