Breaking glasses after a toast

This post in another thread prompts the question:

We’ve all seen movies where people drink a toast and then smash the glasses in the fireplace. I’ve always thought that the idea went something like this: ‘That was so great a toast to so great a man, than no other toast could possibly be worthy of the glasses we used to make it. Thus we must destroy these vessels so that they can never be used for a lesser commemoration.’

Is that the idea? Or have I been wrong all these years?

For Eastern Russian/Siberians its pretty much as you understand it

That was certainly the rationale for bachelor-party toasts as described in 1922 by Emily Post’s Etiquette:

Prior thread.

And not one bit of symbolism there, friends…

A similar custom was claimed, in an 1889 short story by Rudyard Kipling, to have prevailed in parts of the military during the early part of Queen Victoria’s reign: