I don't think that convergence made it so that the pre-crisis multiverse survived but just that certain parts of it survived. And those were the domed cities we saw in the event.

I think this statement makes it pretty clear that all universes survived

Alright, he says that all characters that ever existed in any continuity are available to them as storytellers but how much of convergence is still canon? Almost all of New 52 had already been retconned by 2020, plus death metal also erased and added many of the stories to the canon.

Some where, out there all earths and universes exists. Regardless of what's happened to them (like Earth-3 and the Crime Syndicate)

It seems to just get reshuffled every few years

You mean Hypertime?

It's an interesting concept, Geoff Johns has done some amazing stuff with it in flashpoint beyond, the amazing thing being that he has somehow made it less convoluted and interesting to read about.

Geoff Johns the Retcon Doctor 😁

What does that mean? It's been 2 years but every now and then I still come across a term or refrence I don't understand.